get help in general - we have more specialized help rooms here: https://gitter.im/FreeCodeCamp/home
Is there a way to keep track of boolean values during asynchronous calls? I tried using a global boolean var but it keeps giving me undefined values when I assign it inside an asynchronous function
@danii956 the global variable approach will work, but the variable won't be updated until your asynchronous call is complete.
There's probably a better way - what are you trying to do?
Well, I'm trying to first set the boolean var as celcius and put an onClick function on a tag that will change the text to show either celcius or fahrenheight depending on what the boolean var was set to
so if boolean var == celcius, then set the boolean var = fahrenheit and vice versa
But the problem is it keep showing as undefined for some reason... So I used an arbitrary class called hasCelcius to keep track instead of having a global boolean variable
@danii956 Hard to help without seeing your code, but maybe this explains what's going on:
var myBool;
$.getJSON(weatherapi, function() {
myBool = false;
}).then(function() {
console.log(myBool); //false
});
console.log(myBool) //undefined
Yes! That's pretty much it...
If it's for an onclick though, async shouldn't be an issue unless the user is clicking on the button before the data comes back from the API
Or, if you're changing the element that the person clicks on when they click it - then the onclick handler goes away
Hmm... truth be told, I didn't try using the global var in the onClick because when the undefined thing happened. I will try it again
Thanks @SkyC0der
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I'm looking for help to see if someone can find a way to have my search results open in a new window. I tried a few things but nothing is working for me... https://codepen.io/Braillon7/pen/rzdOvZ
@Braillon7 The hyperlinks for your search results, or you want all of your search results in a new page after clicking submit?
@SkyC0der my search results from the search input that I have on my "wiki search app"
@Braillon7 Add
target="_blank" to the URLs you create in your javascript
"<a href='" + data[3][i] + "' target='_blank'>"
@SkyC0der thank you. this is what I put:
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$('#output').html('');
for(var i=0;i<data[1].length;i++){
$('#output').prepend("<li><a href= "+data[3][i]+">"+data[1][i] +"</a><p>"+data[2][i]+"'target='_blank'></p></li>"); //and this still doesnt work
for(var i=0;i<data[1].length;i++){
$('#output').prepend("<li><a href= "+data[3][i]+">"+data[1][i] +"</a><p>"+data[2][i]+"'target='_blank'></p></li>"); //and this still doesnt work
@Braillon7 it needs to be a part of your <a> tag - just like you did with your footer links on that page
Seems that footer may have been copied from another pen :)
I was wondering about that inline script to update the year
Yes. How did you know?
@Braillon7 Sometimes it helps to put your HTML in your JavaScript formatted like:
$('#output').prepend(
"<li>" +
"<a href='" + data[3][i] + "' target='_blank'>" + data[1][i] + "</a>" +
"<p>"+data[2][i]+"</p>" +
"</li>"
);
That way, you can clearly see where your
<a> link is, and which tags are open/closed
maybe ive just been up too long coding because i put exactly what you have here and its still not opening the search in a new window for me lol...im stressing out
im gonna get rid of the <p>tag and see if that helps
does the url show properly when you mouse over ? with that many " ' ' " you could have some escaping issues
I am on the FCC Data Visualisation -> React Projects -> Markdown Previewer project.
I am using the 'React Bootstrap' to display the Grid system. However, it doesn't seem to work.
Can anybody help me figure out why ?
https://codepen.io/iamrkcheers/pen/oeEyvo?editors=0010
Any help is appreciated. Thank You.
I am using the 'React Bootstrap' to display the Grid system. However, it doesn't seem to work.
Can anybody help me figure out why ?
https://codepen.io/iamrkcheers/pen/oeEyvo?editors=0010
Any help is appreciated. Thank You.
@SkyC0der @Braillon7 shouldn't <a> be self closing ?
@Gersho No, <a> isn't a void element
These are the ones:
area, base, br, col, embed, hr, img, input, keygen, link, menuitem, meta, param, source, track, wbr
i always mix it up with img >.>
@Braillon7 I gave you the exact code to use above
i got rid of my <p> tags but the only rid of the css property. so far i just corrected why my search results was coming up in one small column but thats the only progress so far.
i missed that. let me use it and see if that works. youve been a big help thus for @SkyC0der
@Gersho If
<a> was self closing how would you include the element to be linked?
@SkyC0der unless i placed your code in the wrong place that isn't working either. im considering just moving on to the next project and coming back to it. ive been trying to get these results to open to a new window for most of the day
@Braillon7 I just refreshed your codepen and it works for me
hmmm. it's still not working for me. though if it works for the user im exstatic. are you sure you didn't just click on the random search associated with my logo?
@iamrkcheers You might want to check your console errors. I think it says you need to include jquery for bootstrap.
@sgoldber61 thanks, but it still wont work.
I tried adding the prefix 'ReactBootstrap.' to my 'React Bootstrap tags' but it still won't work (as per the answer given at https://stackoverflow.com/questions/33012499/react-bootstrap-fails-to-render).
Following is my code ..
https://codepen.io/iamrkcheers/pen/oeEyvo?editors=0010
Any help is appreciated. Thank You.
I tried adding the prefix 'ReactBootstrap.' to my 'React Bootstrap tags' but it still won't work (as per the answer given at https://stackoverflow.com/questions/33012499/react-bootstrap-fails-to-render).
Following is my code ..
https://codepen.io/iamrkcheers/pen/oeEyvo?editors=0010
Any help is appreciated. Thank You.
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hey guys, I'm making a tile-based game using ReactJS and I've seen that html's canvas API is good for rendering tile maps. Would this work well in a React component though?
btw I'm using codepen for now to make the level
I've tried googling about this, but didn't find anything useful so far
@iamrkcheers first, you should always check the console.log. not the codepen version...
but your actual browser version of the console.log. On firefox, what i use, it's ctrl+shift+k
your problem is that you need to put jquery before bootstrap javascript
@Braillon7 Yeah I'm sure, it's working for me.
@sgoldber61 thanks. Now it shows an error that 'ReactBootstrap' is not defined.
https://codepen.io/iamrkcheers/pen/oeEyvo?editors=0010
https://codepen.io/iamrkcheers/pen/oeEyvo?editors=0010
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unfortunately that will be hard for me to advise on... i just recently finished the markdown previewer project but didn't use reactbootstrap, just react. :(
@sgoldber61 ohh ok . That's no issue. Thanks for ur help anyway.
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Hello, does anyone have any resources they’d recommend to learn Redux?
@RyanDraves Hi I just finished " Modern React with Redux" course from udemy couple week ago, and I think this course is good for learn redux PS: this is not a promotion :smile:
hello
i have a query,
I was making RANDOM QUOTE GENERATOR
and i dont know how to put a text box displaying the quote in the middle of the page
can anyone help
hey a little help here
i am working on the wikipedia viewer project can anyone tell me how should i make th search box move up when showing results
@BuntyBru https://codepen.io/longnt80/pen/prLgOm
@prakashyadav008 use
transition
@longnt80 can u give an example or reference
i am a bit confused on how to do it
i want the search box to move up and then show the results below it
i am thinking of using the relative position and then changing the position of the based on the viewport
@prakashyadav008 Something like this with transition like Long was saying: https://s.codepen.io/anon/pen/LjdGXx
@SkyC0der ya something like that thanks
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@SkyC0der still not familiar with the arrow => syntax in javascript
@prakashyadav008 I changed it to ES5, refresh and there won't be any arrows
form.submit = () => { // code };form.submit = function() { // code };
but no
arguments or this objects
form.submit are there any other ways to submit form..
@SkyC0der
I am currently at FCC Data Visualisation -> React Projects -> Markdown Previewer.
I am trying to include an 'Ace Editor' from Ace.js.
However, I am getting an error of 'AceEditor is not defined' in the console.
https://codepen.io/iamrkcheers/pen/oeEyvo?editors=0010
Any help is appreciated. Thank You.
I am trying to include an 'Ace Editor' from Ace.js.
However, I am getting an error of 'AceEditor is not defined' in the console.
https://codepen.io/iamrkcheers/pen/oeEyvo?editors=0010
Any help is appreciated. Thank You.
@prakashyadav008 What do you mean?
@SkyC0der
document.getElementById("form").onsubmit
this or how many ways are there to submit a form
form.onsubmit is the same as that code
and this:
$("#form").on("submit", function() {
I guess you could also add an event listener with
.addEventListener('submit', function() {
evening fCC
evening @DarrenfJ
@SkyC0der hey man! how are yah?
Can't complain. How about You? @DarrenfJ
@SkyC0der easy mellow weekend :D
oh man it's always so quiet in here now
Can anybody point out as to why the 'unexpected identifier' error is showing up in my code.
I am on FCC Data Visualisation -> React projects -> Markdown Previewer
https://codepen.io/iamrkcheers/pen/oeEyvo
Any help is appreciated. Thank You.
I am on FCC Data Visualisation -> React projects -> Markdown Previewer
https://codepen.io/iamrkcheers/pen/oeEyvo
Any help is appreciated. Thank You.
@iamrkcheers sorry man, wish I could help but i haven't started teh data visualization stuff yet
@SkyC0der how to use on click events in CSS
instead of jst hover effect
@prakashyadav008 You can use the
:active psuedo selector, but it is only applied when the mouse button is down
i hav the hover effect added but that doesnt stay after i click on the search bar
For an <input> element, you can use
:focus#search-bar:focus{
width:300px;
}
or in JS, onfocus or onblur
can we use both
..?
ya both works
You don't want to use both CSS and JS for this
fine
choose one or the other
i mean like this
#search-bar:focus{
width:300px;
}
#search-bar:hover{
width:300px;
}
works fine take a look
Yes, you can do that
one more doubt
i hav the search bar and the animation font after that in a div
<div class="section1">
<input id="search-bar" placeholder="Search"></input>
<div>animation</div>
</div>
but the problem is in positioning since "section-1" is relative and ""search-bar is absolute so the "animation" font doesnt change according to the input search bar
i want the animation to be beside the input search bar so that i can animate a button later
there
thanks for the chat @Manish-Giri
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and thanks @SkyC0der for sticking it out and helping people out
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i'm off to bed.. too sleeeepy to be of any help
@DarrenfJ ty
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22 more
:smile:
@DarrenfJ Thanks to you too! G'night
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21 :p
@prakashyadav008 I've got to go - but you don't need to absolute/relative position anything. Just use display: inline-block to position them next to each other.
@SkyC0der ill try that
Can anybody point out as to why the 'unexpected identifier' error is showing up in my code.
I am on FCC Data Visualisation -> React projects -> Markdown Previewer
https://codepen.io/iamrkcheers/pen/oeEyvo
Any help is appreciated. Thank You.
I am on FCC Data Visualisation -> React projects -> Markdown Previewer
https://codepen.io/iamrkcheers/pen/oeEyvo
Any help is appreciated. Thank You.
Does anyone know how to add 'a:hover' property onto a tag in the 'render()' function of a react component class.
class Developer extends React.Component {
render() {
const style = {
h4 : {
fontFamily : 'Open Sans Condensed'
},
a : {
color : 'purple',
textDecoration : 'none'
}
};
return (
<h4 style={style.h4}>
<a>
Rishabh Kashyap
</a>
</h4>
);
}
}Any help is appreciated. Thank You.
need help here https://codesandbox.io/s/Y6OlQZnmp
the component is not updating even though props are changed
Hello world!!
need help
well isnt this akward
when using url in ajax is it important to mention method lang and format? if so why?
@koder3 The format is important so you get json back and not XML, the language is important only if the API supports multiple languages.
@gishy1 you cannot use var and () at the same time var is declaring a variable and the () is calling a function
@sjames1958gm im even more confused
var myGlobalScope(); is invalid - remove the var (not sure why you changed this line).
The instructions say to comment out the console.log(myVar) line
@sjames1958gm thanks
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hello :walking:
anyone here familiar with React?
anyone here familiar with React?
i want to update my React app on which I've already run
npm run build, so in order to update it, do I have to delete build folder first and then run npm run build again?
is there anyone to know QT ?
what is QT? just curious :D
Qt is cross-platfrom SDK :D
:+1:
for embedded or desktop
It's up to you
yeah, i see :D
Hey guys, I need some help to format the
minutes to minutes : seconds in my pomodoro clock app. Can anyone please help. I found some method on stackOverflow but it won’t work.
@MukeshAngrish i can help.. give me some time to see your code
Sure
@MukeshAngrish so, i would suggest you to change line 42
setInterval(sessionCount, 1000) to setInterval(sessionCount, 60000)
so it counts minutes then, and also to add similar function for seconds...
or you can keep the original line 42 and then based on its value(value of seconds) to decrease minutes.. so if a second s is equal to 0, then you decrease your minutes by one..
I am at FCC Data Visualisation -> React Projects -> Camper Leaderboard.
I am trying to populate the 'div' tag in my 'render()' with the json I receive after hitting an api.
Everything is OK with the exception that the console is showing the error 'this.setState' is not a function.
https://codepen.io/iamrkcheers/pen/ayYmMZ?editors=0010
Does someone know how to resolve it.
Any help is appreciated. Thank You.
I am trying to populate the 'div' tag in my 'render()' with the json I receive after hitting an api.
Everything is OK with the exception that the console is showing the error 'this.setState' is not a function.
https://codepen.io/iamrkcheers/pen/ayYmMZ?editors=0010
Does someone know how to resolve it.
Any help is appreciated. Thank You.
@iamrkcheers I don't see that error - I see some error relating to radium
@sjames1958gm nevermind. figured it out. Thanks.
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@iamrkcheers Implemented that.setState() ?
@sjames1958gm yes
@ace1122sp I will try that when I am near my laptop
@ace1122sp thanks btw
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@ace1122sp as I was analyzing your code. Are you suggesting that I use setInterval for 60000 milliseconds and use a nested setInterval for 1000 milliseconds
Why I can't display anything via the render?
class App extends React.Component {
constructor(props) {
super(props);
this.state = {
recent: [],
alltime: []
};
}
componentDidMount(){
const ajaxReqs = (url) => {
const request = new XMLHttpRequest();
request.open('GET', url, true);
request.send();
request.onload = () => {
if (request.status >= 200 && request.status < 400) {
var data = JSON.parse(request.responseText);
console.log(data);
return data;
}
};
}
this.setState({
recent: ajaxReqs('https://fcctop100.herokuapp.com/api/fccusers/top/recent'),
alltime: ajaxReqs('https://fcctop100.herokuapp.com/api/fccusers/top/alltime')
});
}
render(){
return(
<p>{this.state.recent[0]}</p>
)
}
}
ReactDOM.render(<App/>, document.querySelector(".content"));
@ace1122sp If you review my code again you will see a commented code for the minutes to seconds. But it didn't work. That's why I asked for help here
hey @MukeshAngrish , check this out: https://www.w3schools.com/howto/howto_js_countdown.asp, there is a pretty good example that can be related to ur problem, it's a counter to but it's the same principle
tho*
@MukeshAngrish if you don't want to show seconds, but only minutes then you can go with '60000 miliseconds approach'.. but if you want to show both minutes and seconds, then you should set your
vas seconds = 60; and with setInterval to 1000ms, you do something like this seconds -= 1; and when your variable seconds comes to 0, then you call some function which decrease your minutes by 1 and set variable seconds back to 60..
just an idea... :D
hey guys, I'm playing around with flexbox to create a sticky footer. Does anyone know what CSS I need to add to make my footer (yellow) reach the edge of the page? Right now the body creates a small border around all the content that I would like to avoid.
ignore the fact that I called it weather app haha I just started playing with this before building my weather app
@5millerk you can try to add
margin:0; on line 3
to #footer, or to body?
html, body
got it
yeah
that worked perfect
:D
thanks!
i knew it would be something simple like that ahah
@ace1122sp ty
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i had exactly the same problem when started with flex :D np
@artbohr @ace1122sp I did something to the code to convert
minutes to minutes : seconds. But looks like I jinxed it. Please help
@MukeshAngrish i've noticed when you click on timer after the session have starte the ticking speeds up.. i had the same problem with my pomodoro.. you need to make timer button to alternate between start and stop
How?
perhaps, you can make some flag and make your function to check each time when the timer has been clicked if it needs to start time or to stop it..
@ace1122sp Yes I can do that but what could be the stop code like. I cannot figure out how to stop the counter and resume it somehow. Could you give me some hint for that. If not, I would focus on the
minutes to minutes : seconds problem that’s bugging me right now
var clockState = 0;
function startOrStopClock(){
if(clockState) {
//stop time
clockState = 0;
} else {
//start time
clockState = 1;
}
Okay I think I get it. So your counter function only works
if(clockState) is true
yeah
@MukeshAngrish if I understood you want to display instead of just minutes, minutes and seconds?
@artbohr Yes. That’s right.
and also it stops time if it's not true...and from here you can make it to restart your timer or just pause it
@ace1122sp I’m redoing most of the JS code. Let’s hope for the best. Thanks again
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np :D :+1:
@MukeshAngrish I took a look at ur code, and first of all you need to declare a variable which will track ur desired session time and convert all the time to one unit and then perform the calculations from there
@MukeshAngrish I really suggest the counter approach I sent you before, you convert all your measurments to milliseconds and from there you display your time performing the calculations which will transform the millisecond to minutes and seconds
@MukeshAngrish for example, you use the "var countDownDate = new Date().getTime()+time601000;" and you have a start point for your counter and then you update the time passed
var now = new Date().getTime();
var distance = countDownDate - now;var countDownDate = new Date().getTime()+time*60*1000;
var now = new Date().getTime();
var distance = countDownDate - now;
@artbohr thanks for the approach but If you look at my closely you will realize I already used that approach
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@MukeshAngrish after that you can get your minutes and seconds like that:
var minutes = Math.floor((distance % (1000 * 60 * 60)) / (1000 * 60));
var seconds = Math.floor((distance % (1000 * 60)) / 1000);$("#timer").on("click", function() {
$(".row").hide();
seconds = 60; //convert minutes to seconds
var sessionTimer = setInterval(sessionCount, 1000);
//start counter which performs a function every 1000 milliseconds
function sessionCount() {
$("#status").html("Session");
seconds -= 1; //decrease count by 1 every second
$("#timer").toggleClass("timer-border-green");
$("#timer").toggleClass("timer-border-yellow");
if(sessionTime % 60 >= 10)
showStr = Math.floor(sesionTime / 60) + ":" + (sessionTime % 60);
else
showStr = Math.floor(sesionTime / 60) + ":0" + (sessionTime % 60);
//$("#time").html(sessionTime);
//Once the sessionTime becomes zero we start the breakTime
if(sessionTime < 1) {
clearInterval(sessionTimer);
//once the sessionCount has ended reset the value automatically
sessionTime = parseInt($("#session").html());
breakTime *= 60;
var breakTimer = setInterval(breakCount, 1000);
//similar thing for breakCount
function breakCount() {
$("#status").html("Break");
breakTime -= 1;
$("#timer").toggleClass("timer-border-red");
$("#timer").toggleClass("timer-border-blue");
if(sessionTime % 60 >= 10)
showStr = Math.floor(sesionTime / 60) + ":" + (sessionTime % 60);
else
showStr = Math.floor(sesionTime / 60) + ":0" + (sessionTime % 60);
//$("#time").html(breakTime);
if(breakTime < 1) {
clearInterval(breakTimer);
breakTime = parseInt($("#break").html());
$(".row").show();
sessionTimer = setInterval(sessionCount, 1000);
}
}
}
};
});
here see this
right now it must be commented in my code as I’m redoing it
@MukeshAngrish I didn't find any use of "new Date().getTime(); and the deduction of the starting point and current point (the time tight now)" to track the time
@MukeshAngrish maybe try to tickle a bit with the plain counter/timer to get the basic functionality of the clock working first
@MukeshAngrish the principle would be getting this "distance" variable updating in the setinterval function every second and then displaying the result of the deduction in your $("#time")
@artbohr because I’m not showing the user the time remaining to reach a particular date in future. That’s what the code you suggested is doing. I’m just showing the user what time is remaining for their set minutes
@MukeshAngrish well it's the same approach, you are getting a date (right now) then you are getting the date again (after 1 second) with the interval and then you are displaying the desired time 25 minutes (minus) time passed which results in 24 mins 59 seconds (displaying for the user)
@artbohr I don’t see any use of the getting the time right now as that would mean I have to give my function a new date that would be 25 mins ahead of now. That would be like using smaller roads instead of using the highway. Which I’m using right now. If you have any suggestions to improve my code, do tell. But I don’t think I need to use the concept of dates when I’m only working with minutes and not even hours.
@MukeshAngrish
sessionTime *= 60; //convert minutes to seconds
var sessionTimer = setInterval(sessionCount, 1000);
//start counter which performs a function every 1000 milliseconds
function sessionCount() {
$("#status").html("Session");
sessionTime -= 1; //decrease count by 1 every second
$("#timer").toggleClass("timer-border-green");
$("#timer").toggleClass("timer-border-yellow");
var minutes = Math.floor(sessionTime/60);
var seconds = Math.floor(sessionTime%60);
Anybody good with ASP.Net / C# I need some help with an application
@Hyperchucks this is for Free code camp stuff - mostly HTML/CSS/JS, you should probably search for another room
@artbohr you have to be tad more specific, mate. Can’t really conclude anything if you will just show me my code. 😜
ive realised there are many ways of receiveing data from external sources. however whats more better to use
$.getJSON or new XMLHttpRequest(); or using$.ajax
ajax is just a wrapper around XMLHttpRequest
and getJSON calls ajax with some predefined parameters
and getJSON calls ajax with some predefined parameters
@moigithub thanks. but what would you prefer to use
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getjson easier :)
Hello
Can anyone help me with a very simple bootstrap formatting question, please?
Can anyone help me with a very simple bootstrap formatting question, please?
sure
@Simdk8 Without the question it is difficult to say
Thanks, I came right in another channel. My issue was I was criss-crossing between versions of Boostrap
which was leading to my code giving results different to what I intended :)
@MukeshAngrish I changed the specific lines compared to ur most current version at that moment u just need to compare a couple of lines
@MukeshAngrish "sessionTimer" is your variable where you store your time in multiplied by 60 (which now makes it true seconds, as you are stating in ur comments instead of the 60000 u had before there) then we deduct from it in the session count -=1 to denote that a second has passed and then we convert from the sessionTime variable to minutes and show them below. Seconds takes your sessionTimer variable and applies the module operator to get the seconds that are left, if you change these lines vs the lines u had you get a working timer, which I tested on ur project before at that time.
yow bross. check this out. even though the condition is right it will return the wrong value. its returning
heres the code.
[3,4] even though it is less than 5. like whaatt?? crazzyyy bro!heres the code.
function dropElements(arr, func) {
for(var i=0; i<arr.length; i++){
if(func(arr[0])){
break;
}else{
arr.shift();
}
}
return arr;
}
dropElements([1, 2, 3, 4], function(n) {return n > 5;}); //should return [].
@artoodeeto because you modified the arr inside the loop
@longnt80 yea. i created a var again
@artoodeeto why not just use filter?
@longnt80 arr.filter(func) ??
@longnt80 i wanted to but it says to use the shift
yes
i see
@longnt80 but i got now bro. thanks
artoodeeto sends brownie points to @longnt80 :sparkles: :thumbsup: :sparkles:
:cookie: 518 | @longnt80 |http://www.freecodecamp.com/longnt80
@artoodeeto np
@longnt80 yow bro can i pm you??