After pressing the button, the arrow I got is
something like this :
Is there a way for me to increase the size of the arrow so that it is more visible? Thanks for any help.
function ChangetoArrows() {
var str = document.getElementById("Arrows").innerHTML;
var res = str.replace(/undefined|turn-right|turn-slight-left|turn-slight-right|turn-left/gi, function ChangetoArrows(x){
if(x=='undefined'){return x='↑';}
if(x=='turn-right'){return x='→';}
if(x=='turn-slight-right'){return x='→';}
if(x=='turn-left'){return x='←';}
if(x=='turn-slight-left'){return x='←';}
else{return x;}//must need
});
document.getElementById("Arrows").innerHTML = res;
}
.button4{
background-color: Yellow;
color: black;
padding: 5px 10px;
text-align: center;
display: inline-block;
font-size: 16px;
cursor: pointer;
}
<button class="button4" onclick="ChangetoArrows()">ChangetoArrows</button>
HTML code renders as text so you can use font-size to adjust size.
Since it looks like you're putting these into an element with id Arrows you should be able to add this to your css:
#Arrows {
font-size: 30px;
}
→ is an example of HTML unicode. Learn more here: https://www.w3schools.com/charsets/ref_utf_arrows.asp
You can increase the font-size of button. for eg: font-size:25px and add in .button4 class.
You could add a CSS class to the element, which defines a larger font-size: document.getElementById("Arrows").classList.add('big-arrows');
Or you could use Font Awesome arrows, which will be bolder than unicode arrows.
Simply wrap it with span and give css. checkout my snippet, hopefully it can help you in some way. have a nice day
function ChangetoArrows() {
var str = document.getElementById("Arrows").innerHTML;
var res = str.replace(/undefined|turn-right|turn-slight-left|turn-slight-right|turn-left/gi, function ChangetoArrows(x){
if(x=='undefined'){return x='↑';}
if(x=='turn-right'){return x='→';}
if(x=='turn-slight-right'){return x='→';}
if(x=='turn-left'){return x='←';}
if(x=='turn-slight-left'){return x='←';}
else{return x;}//must need
});
document.getElementById("Arrows").innerHTML = '<span class="arrow">'+res+'<span>';
}
.button4{
background-color: Yellow;
color: black;
padding: 5px 10px;
text-align: center;
display: inline-block;
font-size: 16px;
cursor: pointer;
}
.arrow{
font-size:150px;
color:red;
}
<button class="button4" onclick="ChangetoArrows()">ChangetoArrows</button>
<div id="Arrows">turn-right</div>
The others already answered the question, so I'm not going to repeat that. However, in this case I would recommend you to use Material Design - Icons:
.material-icons.md-24 { font-size: 24px; }
.material-icons.md-34 { font-size: 34px; }
.material-icons.md-44 { font-size: 44px; }
.material-icons.md-54 { font-size: 54px; }
<link href="https://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet"/>
<i class="material-icons md-24">arrow_back</i>
<i class="material-icons md-34">arrow_forward</i>
<i class="material-icons md-44">arrow_upward</i>
<i class="material-icons md-54">arrow_downward</i>
Just add the CSS library to your code and replace with JS like so:
return x='<i class="material-icons md-24">arrow_back</i>';
Related
$(document).ready(function(){
$('.fa').hide();
$('.icon').click (function(){
$('.icon').addClass('active');
if($(".fa").css("display") == "none") {
$(".fa").show();
}
if $('.icon').click && $('.icon').hasCalss('active') (function(){
$(".fa").hide();
});
});
});
I want it so that when you click on a div(in this case '.icon') The div .fa shows but when I click on it again and .fa is showing it hides .fa
In the console it keeps on coming up with these 2 errors
Uncaught SyntaxError: Unexpected identifier SyntaxError: Unexpected
identifier
but I don't know whats wrong as i'm quite new to jquery and java-script.
Help would be appreciated.
Thank you :)
You need to use toogle function :
$(document).ready(function(){
$('.fa').hide();
$('.icon').click (function(){
$('.icon').addClass('active');
$(".fa").toogle();
});
});
https://www.w3schools.com/jquery/eff_toggle.asp
If it is just about switching classes on click you can use the .toggleClass()-method:
Link to toggleClass() on http://api.jquery.com.
Just use your CSS-Class to manipulate the state.
$(document).ready(function(){
const icon = $('.icon');
icon.click(function() {
$(this).toggleClass("active");
});
});
.container {
border: 1px solid grey;
padding: 0.5em;
text-align: center;
}
.icon {
opacity: 0.5;
font-size: 48px;
color: #ddd;
transition: all 300ms linear;
cursor: pointer;
}
.icon.active {
opacity: 1;
color: #bada55;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<link href="https://use.fontawesome.com/releases/v5.5.0/css/all.css" rel="stylesheet"/>
<section class="container">
<span class="icon active">
<i class="fas fa-stroopwafel"></i>
</span>
<span class="icon">
<i class="fas fa-balance-scale"></i>
</span>
</section>
I'm new to programming in general. I'm learning HTML/CSS/Javascript atm.
I created a simple script that allow the user to change the font size of the paragraph element.
I tired my code is jsFiddle and it works fine, but when I copied it into an HTML document and started the page. The HTML and CSS are functioning properly, but the problem is: JavaScript is not working. Btw I'm using Chrome as a browser.
Is something wrong with my HTML document..? I'm so confused!
Here is the working jsFiddle: https://jsfiddle.net/o60gtvh8/
My HTML file (Download link / Dropbox):
https://www.dropbox.com/s/tl0npr5omefntv4/Font%20size%20changer.rar?dl=0
HTML file code ( Copy of the code in the HTML file provided in the download link above ):
<!doctype html>
<html>
<head>
<style>
h1 {
color: blue;
font-size: 25px;
margin: 10px;
}
h2 {
color: blue;
font-size: 15px;
margin: 10px;
}
p {
margin: 10px;
}
a {
margin: 10px;
font-size: 15px;
text-decoration: none;
border: 1px solid grey;
background-color: cyan;
color: black;
padding: 3px;
}
</style>
<script>
function sizeChanger(size) {
return function() {
document.body.style.fontSize = size + 'px';
};
}
var size10 = sizeChanger(10);
var size20 = sizeChanger(20);
var size30 = sizeChanger(30);
document.getElementById('size-10px').onclick = size10;
document.getElementById('size-20px').onclick = size20;
document.getElementById('size-30px').onclick = size30;
</script>
</head>
<body>
<h1>Tiger</h1>
<h2>(From Wikipedia, the free encyclopedia)</h2>
<p>The tiger (Panthera tigris) is the largest cat species, most recognizable for
their pattern of dark vertical stripes on reddish-orange fur with a lighter underside.
The species is classified in the genus Panthera with the lion, leopard, jaguar, and snow leopard.
</p>
Font size 10
Font size 20
Font size 30
</body>
</html>
Move your JavaScript to the end of the page before the closing body element. As it stands now you're trying to access elements that don't exist yet. jsFiddle works because by default they wrap the JavaScript code in a window.onload event.
h1 {
color: blue;
font-size: 25px;
margin: 10px;
}
h2 {
color: blue;
font-size: 15px;
margin: 10px;
}
p {
margin: 10px;
}
a {
margin: 10px;
font-size: 15px;
text-decoration: none;
border: 1px solid grey;
background-color: cyan;
color: black;
padding: 3px;
}
<h1>Tiger</h1>
<h2>(From Wikipedia, the free encyclopedia)</h2>
<p>The tiger (Panthera tigris) is the largest cat species, most recognizable for
their pattern of dark vertical stripes on reddish-orange fur with a lighter underside.
The species is classified in the genus Panthera with the lion, leopard, jaguar, and snow leopard.
</p>
Font size 10
Font size 20
Font size 30
<script>
function sizeChanger(size) {
return function() {
document.body.style.fontSize = size + 'px';
};
}
var size10 = sizeChanger(10);
var size20 = sizeChanger(20);
var size30 = sizeChanger(30);
document.getElementById('size-10px').onclick = size10;
document.getElementById('size-20px').onclick = size20;
document.getElementById('size-30px').onclick = size30;
</script>
So there's nothing really wrong with your code (although you should avoid legacy DOM notation like document.body.style.fontSize) -- you're just executing it too early.
I have the code as here in this jsfiddle, I want the font awesome icon to change on button click using javascript, but it does'nt seem to work. I'm new to javascript so please forgive me if this was a dumb question.
HTML
<button id="favBtn" onclick="fav();">
<i id="favIcon" class="fa fa-star-o"></i> Favourite
</button>
Javascript
function fav() {
document.getElementById("favIcon").toggleClass('fa-star-o fa-star');
}
When using jQuery you never need to use an inline attribute eventHandler.
onclick=
Demo 1 uses jQuery .toggleClass()
Demo 2 uses JavaScript .classList.toggle()
Demo 3 uses CSS :checked pseudo-class
Update v4 to v5: Go to Start | Font Awesome. There are some class changes as well. See Demo 4.
Demo 1 -- jQuery
$('button').on('click', fav);
function fav(e) {
$(this).find('.fa').toggleClass('fa-star-o fa-star');
}
:root {
font: 400 16px/1.5 Verdana;
}
button {
display: inline-block;
font: inherit;
padding: 0px 5px;
cursor: pointer;
}
button::after {
content: ' Favorite'
}
<link href='https://cdn.jsdelivr.net/fontawesome/4.7.0/css/font-awesome.min.css' rel='stylesheet'>
<button>
<i class="fa fa-star-o"></i>
</button>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
Demo 2 -- Plain JavaScript
document.querySelector('button').addEventListener('click', fav);
function fav(e) {
const tgt = e.target.firstElementChild;
tgt.classList.toggle('fa-star');
tgt.classList.toggle('fa-star-o');
}
:root {
font: 400 16px/1.5 Verdana;
}
button {
display: inline-block;
font: inherit;
padding: 0px 5px;
cursor: pointer;
}
button::after {
content: ' Favorite'
}
<link href='https://cdn.jsdelivr.net/fontawesome/4.7.0/css/font-awesome.min.css' rel='stylesheet'>
<button>
<i class="fa fa-star-o"></i>
</button>
Demo 3 -- Pure CSS
:root {
font: 400 16px/1.5 Verdana;
}
#fav {
display: none
}
#fav+label {
display: inline-block;
border: 2px outset grey;
padding: 0px 5px;
cursor: pointer;
-webkit-appearance: button;
-moz-appearance: button;
appearance: button;
}
#fav+label::after {
content: ' Favorite'
}
#fav+label>.fa-star-o {
display: inline-block
}
#fav+label>.fa-star {
display: none;
}
#fav:checked+label>.fa-star-o {
display: none;
}
#fav:checked+label>.fa-star {
display: inline-block
}
<link href='https://cdn.jsdelivr.net/fontawesome/4.7.0/css/font-awesome.min.css' rel='stylesheet'>
<input id='fav' type='checkbox'>
<label for='fav'>
<i class="fa fa-star-o"></i>
<i class="fa fa-star"></i>
</label>
Demo 4 -- Font Awesome 5
jQuery / JavaScript / CSS
/* #1 jQuery */
$('button.jq').on('click', jQFav);
function jQFav(e) {
$(this).find('.fa-star').toggleClass('fas far');
}
/* #2 JavaScript */
document.querySelector('button.js').addEventListener('click', JSFav);
function JSFav(e) {
const tgt = e.target.firstElementChild;
tgt.classList.toggle('far');
tgt.classList.toggle('fas');
}
/* #1 JS / #2 jQ */
:root {
font: 400 16px/1.5 Verdana;
}
button {
display: inline-block;
font: inherit;
padding: 0px 5px;
cursor: pointer;
}
button::after {
content: ' Favorite'
}
/* #3 CSS */
#fav {
display: none
}
#fav+label {
display:inline-block;
border: 2px outset grey;
padding: 0px 5px;
cursor: pointer;
-webkit-appearance: button;
-moz-appearance: button;
appearance: button;
}
#fav+label::after {
content: ' Favorite'
}
#fav+label>.far {
display: inline-block;
}
#fav+label>.fas {
display: none;
}
#fav:checked+label>.far {
display: none;
}
#fav:checked+label>.fas {
display: inline-block
}
<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.8.2/css/all.css" crossorigin="anonymous">
<ol>
<li><fieldset>
<legend>jQuery</legend>
<button class='jq'>
<i class='fa-star far'></i>
</button>
</fieldset></li>
<li><fieldset>
<legend>Plain JavaScript</legend>
<button class='js'>
<i class='fa-star far'></i>
</button>
</fieldset></li>
<li><fieldset>
<legend>Pure CSS</legend>
<input id='fav' type='checkbox'>
<label for='fav'>
<i class="fa-star far"></i>
<i class="fa-star fas"></i>
</label>
</fieldset></li>
</ol>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
.toggleClass() is a jQuery function and you're using it as JavaScript. Try this:
$("#favIcon").toggleClass('fa-star-o fa-star');
Difster's response is correct. Here is how you can accomplish the same thing using native JavaScript:
document.getElementById("favIcon").classList.toggle('fa-star-o');
document.getElementById("favIcon").classList.toggle('fa-star');
Additionally with what Difster said, .toggleClass is a jQuery function.
Beyond that, I wouldn't use the DOM to define bindings to functions; Using jQuery's event listener system will allow for more maintainable and understandable code:
https://jsfiddle.net/0n1n9o9n/2/
$(document).ready(function() {
$('#favBtn').on('click', function() {
$("#favIcon").toggleClass('fa-star-o fa-star');
});
});
I would split my comment into multiple remarks:
1/ As mentioned in the other comments: $("#favIcon").toggleClass('fa-star-o fa-star'); This is a mix of JS and JQuery calls.
If you want to use pure JS you would use:
document.getElementById("favIcon").classList.toggle('fa-star-o');
If you want to use JQuery you can use () As mentioned in Difster's comment:
$("#favIcon").toggleClass('fa-star-o');
2/ As mentioned already in the comments, it's better to attach an event listener.
Your Fiddle js would look like this:
document.getElementById("favBtn").addEventListener("click", fav);
function fav() {
document.getElementById("favIcon").classList.toggle('fa-star-o');
document.getElementById("favIcon").classList.toggle('fa-star');
}
And remove the "onClick" on the HTML since you would be attaching a js event listener.
Links to check:
JQuery toggleClass - js classList
Hope It Helps
$('.fa-star').click(function() {
$(this).toggleClass('fas far');
})
<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.4.1/css/all.css" integrity="sha384-5sAR7xN1Nv6T6+dT2mhtzEpVJvfS3NScPQTrOxhwjIuvcA67KV2R5Jz6kr4abQsz" crossorigin="anonymous">
<script src="https://unpkg.com/jquery/dist/jquery.min.js"></script>
<i class="far fa-star"></i>
You can use only Javascript:
function fav() {
var icon = document.getElementById("favIcon");
if (icon.classList.contains("fa-star-o")) {
icon.classList.remove("fa-star-o");
icon.classList.add("fa-star");
} else {
icon.classList.remove("fa-star");
icon.classList.add("fa-star-o");
}
}
example
In Anki, I have a note type where one card is effectively a cloze deletion, however I am using other cards at the same time, with the cloze deletion field in it. I've tried to use javascript to replace everything within two '\'s and it appears to work in the preview when editing, but when the card appears during normal use, only the first line appears as plain text. I'm using the desktop linux program for editing, but would also like to be able to use it in AnkiDroid.
So the question is: what's the problem and how can I fix it?
Front Template:
<script>
function showDef() {
document.getElementById("def").innerHTML = '{{Bedeutung 1}}'.replace(/^[^\/]+\/\*!?/, '').replace(/\*\/[^\/]+$/, '');
};
var initial = false;
var beispiel = (function () {/*{{Beispiel 1}}*/}).toString().replace(/^[^\/]+\/\*!?/, '').replace(/\*\/[^\/]+$/, '');
var splitBeispiel = beispiel.split('\\');
document.write(splitBeispiel[0] + "<n id='cloze'>[...]</n>" + splitBeispiel[2]);
</script>
<p onclick="showDef()" id="def">Click to show definition</p>
Styling:
.card {
font-family: arial;
font-size: 20px;
text-align: center;
color: black;
background-color: white;
}
#cloze {
font-family: arial;
font-size: 25px;
text-align: center;
color: blue;
background-color: white;
}
#def {
font-family: arial;
font-size: 15px;
text-align: center;
color: green;
background-color: white;
}
#beispiel {
font-family: arial;
font-size: 15px;
text-align: center;
color: orange;
background-color: white;
}
Back Template:
<script>
var initial = false;
var beispiel = (function () {/*{{Beispiel 1}}*/}).toString().replace(/^[^\/]+\/\*!?/, '').replace(/\*\/[^\/]+$/, '');
var splitBeispiel = beispiel.split('\\');
document.write(splitBeispiel[0] + "<n id='cloze'>" + splitBeispiel[1] +"</n>" + splitBeispiel[2]);
</script>
<hr id=answer>
{{Singular Nominativ}}
The 'Beispiel 1' field in the following example is "ein kirchlicher, ein \gesetzlicher\ Feiertag"
Screenshot of editor preview:
Screenshot of test:
I guess, you should look for the solution here.
Avoid using document.write in your templates and use document.getElementById("HTMLidToReplace").innerHTML = '<b>' + your_var + '</b>';, for example. Hope it helps.
I've been messing about with an inventory-like system for a website I'm working on.
I don't usually use JavaScript, So this little problem has been driving me crazy.
I'm trying to add two floats together using two different functions.
One is addition, One is subtraction.
This is the code:
function addItem(item){
$("#item-" + item.toString()).insertAfter("#selected h1");
$("#item-" + item.toString() + " a").attr("onclick","remItem(" + item.toString() + ")");
updateTotal(item, 0);
}
function remItem(item){
$("#item-" + item.toString()).insertAfter("#my h1");
$("#item-" + item.toString() + " a").attr("onclick","addItem(" + item.toString() + ")");
updateTotal(item, 1);
}
function updateTotal(item, action){
if(action=0){
var value = $("#item-" + item.toString() + " a .value").text().replace("$ ", "");
var oldVal = $(".total").text().replace("$ ", "");
var newVal = parseFloat(value) + parseFloat(oldVal);
$(".total").text(newVal);
} else {
var value = $("#item-" + item.toString() + " a .value").text().replace("$ ", "");
var oldVal = $(".total").text().replace("$ ", "");
var newVal = parseFloat(value) - parseFloat(oldVal);
$(".total").text(newVal);
}
}
.wrapper{
text-align: center;
}
.item-holder{
width: 45%;
text-align: left;
padding: 5px;
overflow: auto;
display: inline-block;
background-color: #222;
min-height: 160px;
}
.item-holder h1{
color: white;
margin: 0;
padding: 0;
text-align: center;
}
.smallimg{
margin: 2px 2%;
width: 96%;
}
.item {
margin: 2px 2px 2px 2px !important;
cursor: pointer;
color: #333;
background: rgba(200,200,200,0.9);
text-align: center;
min-width: 60px;
max-width: 100px;
width: 18%;
border: solid medium gray;
display: inline-block;
}
.value{
font-size: 10pt;
font-weight: bold;
padding-top: 5px;
}
.rarity{
font-style: italic;
font-weight: bold;
}
.total{
font-weight: bold;
}
.Consumer{
border-color: rgb(176, 195, 217);
}
.Mil-Spec{
border-color: rgb(75, 105, 255);
}
.Industrial{
border-color: rgb(94, 152, 217);
}
.Restricted{
border-color: rgb(136, 71, 255);
}
.Classified{
border-color: rgb(211, 44, 230);
}
.Covert{
border-color: rgb(235, 75, 75);
}
#selected{
color: white !important;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="wrapper">
<span class="total">$ 0.00</span><br /><br />
<!-- START ITEM HOLDER-->
<div id="my" class="item-holder">
<h1>Your Items</h1>
<div class="item Industrial" id="item-22">
<a onClick="addItem(22);">
<div class="value">$ 0.05</div>
<img class="smallimg" src="http://cdn.steamcommunity.com/economy/image/7xs5DOPUQVgttOnINvLH41dX872npE8Y-Xo60tIUj0QmEA73usgHSo1t9TYQkpttT1Co-q67Txz_cT3A0wKYTilSGv2rzABDnRzxPBPYiHxLRuPi6u4BBfNwDMCbUs4XGA4Ox7nMBUq2J_ktDuKNfElG9JLx4gcd6DBlgc5SmRYmGE6o_s4QSYgi9G4Z2Jl8CEbm-Ky8VUKqJ2qCzFLOQyUZUOijyg==/99fx66f" title="SG 553 | Waves Perforated (Field-Tested)">
<div class="rarity">Field-Tested</div>
</a>
</div>
<div class="item Restricted" id="item-21">
<a onClick="addItem(21);">
<div class="value">$ 11.40</div>
<img class="smallimg" src="http://cdn.steamcommunity.com/economy/image/7xs5DOPUQVgttOnINvLH41dX872npE8Y-Xo60tIUj0QmEA73usgHSo1t9TYQkpttT1Co-q67Txz_cT3A0wKYTilSGv2rzABDnRzxPBPYiHxLRuPi6u4BBfNwDMCbUs4XGA4Ox7nMBUq2J_ktDuKNfElG9JLx4gcd6DBlgc5SmRYmGE6o_s4QSYgi9G4Z2Jl8CEbm-Ky8VUKqJ2qCzFLOQyUZUOijyg==/99fx66f" title="SG 553 | Waves Perforated (Field-Tested)">
<div class="rarity">Field-Tested</div>
</a>
</div>
<div class="item Covert" id="item-20">
<a onClick="addItem(20);">
<div class="value">$ 7.65</div>
<img class="smallimg" src="http://cdn.steamcommunity.com/economy/image/7xs5DOPUQVgttOnINvLH41dX872npE8Y-Xo60tIUj0QmEA73usgHSo1t9TYQkpttT1Co-q67Txz_cT3A0wKYTilSGv2rzABDnRzxPBPYiHxLRuPi6u4BBfNwDMCbUs4XGA4Ox7nMBUq2J_ktDuKNfElG9JLx4gcd6DBlgc5SmRYmGE6o_s4QSYgi9G4Z2Jl8CEbm-Ky8VUKqJ2qCzFLOQyUZUOijyg==/99fx66f" title="SG 553 | Waves Perforated (Field-Tested)">
<div class="rarity">Field-Tested</div>
</a>
</div>
</div>
<!-- END ITEM HOLDER -->
<div id="selected" class="item-holder">
<h1>Selected Items</h1>
</div>
</div>
The first item works fine, You add the item, It updates the total.
Add a second item, It subtracts the new item value from the old one.
Remove the first item and it adds the value to the total.
It's a little messed up, it randomly adds and subtracts.
I'm really not sure why it's causing this, so I came here.
Any ideas what I'm doing what?
Thanks in advance!
CodePen
Inu, in addition to fixing the if(action = 0) bug, you might also like to consider the following :
attach click handlers in javascript, not as HTML attributes.
things will simplify with more carefully chosen jQuery selectors and method chaining.
by delegating click handling to static wrappers (#selected and #my), you can avoid the need to dynamically swap out 'addItem' and 'remItem'. The click action of each item will be automatically determined by the current wrapper.
in the click handlers, this refers to the clicked a element, therefore no need to rediscover it with a jQuery selector, and .closest() will avoid the need to find items by id.
to maintain a reliable total, you should really recalculate from scratch by looping through all items, rather than applying deltas.
by putting values in spans with the '$' outisde, you can get the values directly, without stripping out the symbol.
Put everything together and you should end up with something like this :
HTML
....
<div class="value">$ <span>11.40</span></div>
....
Javascript
$('#my').on('click', '.item a', function(e) {
e.preventDefault();
$(this).closest('.item').insertAfter("#selected h1");
calcTotal();
});
$('#selected').on('click', '.item a', function(e) {
e.preventDefault();
$(this).closest('.item').insertAfter("#my h1");
calcTotal();
});
function calcTotal(item, sign) {
var total = 0;
$("#selected .value span").each(function() {
total += Number($(this).text());
});
$(".total").text(total);
}
untested
You are using the assignment operator = here: if(action=0){ when you should be using the comparisson operator == as if(action==0){