This question already has answers here:
Uncaught ReferenceError: $ is not defined?
(40 answers)
Closed 6 years ago.
here is my problem. I have the code that you see below. Why it doesn't work like it does here: http://jsfiddle.net/e6kaV/33/ ?
There is the error that is shown to me:
{
"message": "Uncaught ReferenceError: $ is not defined",
"filename": "http://stacksnippets.net/js",
"lineno": 54,
"colno": 13
}
Every help is appreciated, because I don't know how JS or jQuery works.
.pane-launcher{
position:absolute;
top: 0;
width:80px;
height:80px;
display:block;
}
#rules {
left:0px;
}
#scenarios {
left:90px;
}
.pane{
position:absolute;
left: 0;
height:50px;
display:none;
opacity:1;
}
#rules-pane {
top:80px;
width:170px;
background-color:yellow;
}
#scenarios-pane {
top:80px;
width:170px;
background-color:blue;
}
<html lang="en">
<head>
<meta charset="utf-8" />
<title>TEST</title>
<link rel="stylesheet" href="css.css">
</head>
<body>
<div id="rules" class="pane-launcher"><img src="http://placehold.it/80x80"></div>
<div id="rules-pane" class="pane">Model1</div>
<div id="scenarios" class="pane-launcher"><img src="http://placehold.it/80x80"></div>
<div id="scenarios-pane" class="pane">Model2<br><img src="http://placehold.it/170x20"></div>
<script>
$(".pane-launcher").click(function () {
// Set the effect type
var effect = 'slide';
// Set the options for the effect type chosen
var options = { direction: 'up' };
// Set the duration (default: 400 milliseconds)
var duration = 700;
$('.pane.active, #'+this.id+'-pane').toggle(effect, options, duration).toggleClass('active');
});</script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
</body>
</html>
Load jQuery before using it:
<html lang="en">
<head>
<meta charset="utf-8" />
<title>TEST</title>
<link rel="stylesheet" href="css.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
</head>
<body>
<div id="rules" class="pane-launcher"><img src="http://placehold.it/80x80"></div>
<div id="rules-pane" class="pane">Model1</div>
<div id="scenarios" class="pane-launcher"><img src="http://placehold.it/80x80"></div>
<div id="scenarios-pane" class="pane">Model2<br><img src="http://placehold.it/170x20"></div>
<script>
$(".pane-launcher").click(function () {
// Set the effect type
var effect = 'slide';
// Set the options for the effect type chosen
var options = { direction: 'up' };
// Set the duration (default: 400 milliseconds)
var duration = 700;
$('.pane.active, #'+this.id+'-pane').toggle(effect, options, duration).toggleClass('active');
});
</script>
</body>
</html>
I put it in the <head> but you can put it anywhere, as long as it's before the code that uses $ ($ is jQuery).
You should add jquery before you can use it. Here is the working example. I have just removed the script tag of jquery from bottom and placed it before other scripts.
Here is the pen http://codepen.io/anon/pen/xOzjWg
$(".pane-launcher").click(function () {
// Set the effect type
var effect = 'slide';
// Set the options for the effect type chosen
var options = { direction: 'up' };
// Set the duration (default: 400 milliseconds)
var duration = 700;
$('.pane.active, #'+this.id+'-pane').toggle(effect, options, duration).toggleClass('active');
});
.pane-launcher{
position:absolute;
top: 0;
width:80px;
height:80px;
display:block;
}
#rules {
left:0px;
}
#scenarios {
left:90px;
}
.pane{
position:absolute;
left: 0;
height:50px;
display:none;
opacity:1;
}
#rules-pane {
top:80px;
width:170px;
background-color:yellow;
}
#scenarios-pane {
top:80px;
width:170px;
background-color:blue;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jqueryui/1.11.4/jquery-ui.min.js"></script>
<div id="rules" class="pane-launcher"><img src="http://placehold.it/80x80"></div>
<div id="rules-pane" class="pane">Model1</div>
<div id="scenarios" class="pane-launcher"><img src="http://placehold.it/80x80"></div>
<div id="scenarios-pane" class="pane">Model2<br><img src="http://placehold.it/170x20"></div>
Thanks for help everybody, got it working after i included these 3 scripts link (which was an answer in suggested related question).
<script src="http://code.jquery.com/jquery-1.10.2.js"></script>
<script src="http://code.jquery.com/ui/1.11.2/jquery-ui.js"></script>
<script src="http://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
Related
This question already has answers here:
Why does jQuery or a DOM method such as getElementById not find the element?
(6 answers)
Closed 7 years ago.
I am pretty new to javascript and want to code a header of an html site.
JS: when the window width is smaller than 1215px --> left part goes 100% width; right part of the header to 0
I always get the "Cannot read property 'setAttribute' of null " Error!
Please Help!
Code:
if (window.innerWidth < 1215) {
document.getElementById("#headerLeft").setAttribute("style", "width:100%");
document.getElementById("#headerRight").setAttribute("style", "width:0%");
} else {
document.getElementById("#headerLeft").setAttribute("style", "width:50%");
document.getElementById("#headerRight").setAttribute("style", "width:50%");
}
body {
margin:0;
}
header{
height:100px;
width:100%;
}
#headerLeft {
background-color:#FF7043;
height:100px;
float:left;
}
#headerRight {
background-color:#FFFFFF;
height:100px;
float:right;
}
.headerTitle {
font-family:'Roboto', sans-serif;
margin:15px;
font-size:70px;
}
#headerRight .headerTitle {
text-align:left;
color:#FF7043;
font-weight:300;
}
#headerLeft .headerTitle {
text-align:center;
color:#FFFFFF;
font-weight:900;
}
<!doctype html>
<html>
<head>
<meta charset="UTF-8">
<title>example</title>
<!-- css -->
<link type="text/css" rel="stylesheet" href="style.css">
<!-- fonts -->
<link href='https://fonts.googleapis.com/css?family=Roboto:400,500,700,900,100,300' rel='stylesheet' type='text/css'>
<!-- javascripts -->
<script language="javascript" type="text/javascript" src="script.js"></script>
</head>
<body>
<header>
<div id="headerLeft">
<p class="headerTitle">example</p>
</div>
<div id="headerRight">
<p class="headerTitle">example</p>
</div>
</header>
<nav>
</nav>
<main>
</main>
<footer>
</footer>
</body>
</html>
It is because all of your calls to document.getElementById are failing to find anything since there aren't any elements with those IDs. Looks like jQuery habits in play, remove the # from your IDs.
At first do selection by Id without '#'.
The second is to set style in such way:
document.getElementById('').style.width = "20%";
I'm working on a website for a school project and I'm having trouble with using the javascript. I am not a fan of js because I always have issues with it and I can never seem to get them figured out without help, but it is one of the requirements for the project. I am trying to make the title in the page move in from off the left side of the page and into the center when the page loads. Here is my code:
JS:
function animate() {
function movetext() {
obj = document.getElementById('spacer');
obj.style.position ='relative';
obj.style.left = '-100px'; //still needs to be adjusted
}
function moveright() {
obj.style.alignContent="center";
obj.style.animation="move 2s";
}
}
HTML:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Lockport, NY - Activities</title>
<link rel="stylesheet" href="project.css">
<link href='https://fonts.googleapis.com/css?family=Oleo+Script+Swash+Caps' rel='stylesheet' type='text/css'>
</head>
<body onload="animate();">
<!-- Background -->
<div class="background">
<!-- Navigation -->
<?php
include 'includes/nav.php';
?>
<!-- Title -->
<div id="spacer"><p span class="titles">Activities...</p></div>
<div id="wrapper">
<div id="main">
//code removed for readability
</div>
<!-- Footer -->
<?php
include 'includes/footer.php';
?>
</div>
</div>
</body>
<script src="project1.js"></script>
</html>
I know I'm not the greatest when it comes to coding, and I know its probably a simple fix but I can't find it. Help is appreciated.
You can do this easily with CSS animations:
setTimeout(function() {
document.getElementById('spacer').classList.add('show');
}, 100);
#spacer {
position: absolute;
right: 100%;
transition: right 3s;
}
#spacer.show {
right: 50%;
}
<div id="spacer">
<p class="titles">
Hello
</p>
</div>
A more elegant solution for this would be to use two classes (e.g. .centerpos, .title) and just assign the class with the styling for centering the text via js.
So it would look something like that:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Lockport, NY - Activities</title>
<link href='https://fonts.googleapis.com/css?family=Oleo+Script+Swash+Caps' rel='stylesheet' type='text/css'>
</head>
<style>
.title {
position: absolute;
left: -100px;
transition: left 2s;
}
.title.centerpos {
left: 50%;
transform: translate(-50%, 0);
}
</style>
<body onload="document.querySelector('.title').classList.add('centerpos');">
<div class="background">
<div id="spacer"><p span class="titles title">Activities...</p></div>
<div id="wrapper">
<div id="main">
//code removed for readability
</div>
</div>
</div>
</body>
</html>
I'm trying to make my menu, that sticks on the top of the page, to change color when I passed scrolling a certain div.
I guess the problem lies in this line: var mainbottom = $('#main').offset().top + $('#main').height();
Because I get the error from chrome: Uncaught TypeError: Cannot read property 'top' of undefined Whats wrong?
Here is my code:
<!doctype html>
<html lang="en-US">
<head>
<link rel="stylesheet" href="style.css" type="text/css">
<style type="text/css">
.nav {
background-color:transparent;
color:#fff;
transition: all 0.25s ease;
position:fixed;
top:0;
width:100%;
background-color:#ccc;
padding:1em;
}
.nav.past-main {
background-color:#fff;
color:#444;
}
#main {
height:500px;
background-color:red;
}
#below-main {
height:1000px;
background-color:#eee;
}
</style>
</head>
<body>
<script type="text/javascript">
var mainbottom = $('#main').offset().top + $('#main').height();
$(window).on('scroll',function(){
stop = Math.round($(window).scrollTop());
if (stop > mainbottom) {
$('.nav').addClass('past-main');
}
else {
$('.nav').removeClass('past-main');
}
});
</script>
<nav class="nav">
link
</nav>
<div id="main">#main</div>
<div id="below-main">#below-main</div>
<script type="text/javascript" src="jquery-1.11.1.min.js"></script>
</body>
</html>
I got the code from here: http://codepen.io/taylorleejones/pen/KJsvz?editors=011 but doesn't seem to work for me
Thanks! :)
Your script is running before the DOM elements that it makes use of are rendered. Things like #main don't exist yet because your code is being executed as soon as it's parsed by the browser (unless you specifically ask it to wait) and what you are trying to access is undefined. Move the script tags in the body to the bottom of the body or use one of the many methods for delaying execution until the DOM loads.
<body>
<nav class="nav">
link
</nav>
<div id="main">#main</div>
<div id="below-main">#below-main</div>
<script>
$(function() {
//your code
var mainbottom = $('#main').offset().top + $('#main').height();
$(window).on('scroll',function(){
stop = Math.round($(window).scrollTop());
if (stop > mainbottom) {
$('.nav').addClass('past-main');
} else {
$('.nav').removeClass('past-main');
}
});
});
</script>
</body>
or
$(document.ready(function() {
//your code
});
or
window.onload = function() {
//your code
};
Im trying to implement a simple plugin that resize image based on a container.
The problem is , I don't understand why it's not resizing my image when I placed it inside a container
This is the simple plugin demo page i'm trying to replicate
https://dl.dropboxusercontent.com/u/6983010/wserv/imgLiquid/examples/imgLiquid.html
This is my Code
<html>
<head>
<link rel="stylesheet" href="css/float.css">
<script type = "text/javascript" src ="http://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<script type = "text/javascript" src ="https://raw.github.com/karacas/imgLiquid/master/src/js/imgLiquid-min.js"></script>
<script type="text/javascript">
$(document).ready(function () {
$(".imgLiquidFill").imgLiquid({fill:true, fadeInTime:500});
$(".imgLiquidNoFill").imgLiquid({fill:false});
});
</script>
</head>
<body>
<div class="container" >
<img src="Creek.jpg"/></div>
</div>
</body>
</html>
My CSS
.container {height: 440px; width: 950px; background:#FFFFFF}
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
<title>Image</title>
<style>
.container{
background-color:#f7f7f7;
border:2px solid #ccc;
margin:10px;
display:inline-block;
}
.imgLiquid {
display:block;
overflow: hidden;
background:transparent url('http://www.lotienes.com/imagenes/loading.gif') no-repeat center center;
}
.imgLiquid img{
visibility:hidden;
}
</style>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"
type="text/javascript"></script>
<script type="text/javascript"
src="https://raw.github.com/karacas/imgLiquid/master/src/js/imgLiquid-min.js"></script>
<script type="text/javascript">
$(document).ready(function () {
$(".imgLiquidFill").imgLiquid({
fill: true,
fadeInTime:200,
horizontalAlign: "center",
verticalAlign: "top"
});
});
</script>
</head>
<body>
<div class="container">
<span class="imgLiquidFill imgLiquid" style="width:250px; height:250px;">
<a href="/media/Woody.jpg" target="_blank" title="test">
<img alt="" src="/media/Woody.jpg"/>
</a>
</span>
</div>
</body>
</html>
Your changing the codes and you forgot to define the imgLiquidFill and imgLiquid in the class which is very important to make this plugin effective. In modifying the codes make sure you didn't forgot anything. Another thing is you can rename the class but make sure you also rename it in the script to make it the same.
Am using the below script to change the color of the script but showing 'font color="red">Hello world /font> like this.Is any possible way to change the alert text color..
<html>
<head>
<title>JavaScript String fontcolor() Method</title>
</head>
<body>
<script type="text/javascript">
var str = new String("Hello world");
alert(str.fontcolor( "red" ));
</script>
</body>
</html>
No. alert() accepts a string and renders it using a native widget. There is no provision to style it.
The closest you could get would be to modify the HTML document via the DOM to display the message instead of using an alert().
You can use JQuery to resolve your Problem
<html>
<head>
<meta charset="utf-8" />
<title>JavaScript String fontcolor() Method</title>
<link rel="stylesheet" href="http://code.jquery.com/ui/1.10.3/themes/smoothness/jquery- ui.css" />
<script src="http://code.jquery.com/jquery-1.9.1.js"></script>
<script src="http://code.jquery.com/ui/1.10.3/jquery-ui.js"></script>
<link rel="stylesheet" href="/resources/demos/style.css" />
<script>
$(function() {
$( "#dialog-message" ).dialog({
modal: true,
buttons: {
Ok: function() {
$( this ).dialog( "close" );
}
}});
});
</script>
</head>
<body>
<div id="dialog-message" title="My Dialog Alternative">
<p style='color:red'> Hello world </p>
</div>
</body>
</html>
Hope this help :
<!doctype html>
<html>
<head>
<title>JavaScript String fontcolor() Method</title>
<style>
#alertoverlay{display: none;
opacity: .8;
position: fixed;
top: 0px;
left: 0px;
background: #FFF;
width: 100%;}
#alertbox{display: none;
position: fixed;
background: #000;
border:7px dotted #12f200;
border-radius:10px;
font-size:20px;}
#alertbox > div > #alertboxhead{background:#222; padding:10px;color:#FFF;}
#alertbox > div > #alertboxbody{ background:#111; padding:40px;color:red; }
#alertbox > div > #alertboxfoot{ background: #111; padding:10px; text-align:right; }
</style><!-- remove padding for normal text alert -->
<script>
function CustomAlert(){
this.on = function(alert){
var winW = window.innerWidth;
var winH = window.innerHeight;
alertoverlay.style.display = "block";
alertoverlay.style.height = window.innerHeight+"px";
alertbox.style.left = (window.innerWidth/3.5)+"pt";
alertbox.style.right = (window.innerWidth/3.5)+"pt"; // remove this if you don't want to have your alertbox to have a standard size but after you remove modify this line : alertbox.style.left=(window.inner.Width/4);
alertbox.style.top = (window.innerHeight/10)+"pt";
alertbox.style.display = "block";
document.getElementById('alertboxhead').innerHTML = "JavaScript String fontcolor() Method :";
document.getElementById('alertboxbody').innerHTML = alert;
document.getElementById('alertboxfoot').innerHTML = '<button onclick="Alert.off()">OK</button>';
}
this.off = function(){
document.getElementById('alertbox').style.display = "none";
document.getElementById('alertoverlay').style.display = "none";
}
}
var Alert = new CustomAlert();
</script>
</head>
<body bgcolor="black">
<div id="alertoverlay"></div>
<div id="alertbox">
<div>
<div id="alertboxhead"></div>
<div id="alertboxbody"></div>
<div id="alertboxfoot"></div>
</div>
</div>
<script>Alert.on("Hello World!");</script>
</body>
</html>
The concept is taken from this : http://www.developphp.com/video/JavaScript/Custom-Alert-Box-Programming-Tutorial