Display a div using a javascript function - javascript

I'd like to display a div on a webpage when a user clicks on a button.
Does someone know how to do this ?
My code, so far, is :
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso 8859-1" />
</head>
<body>
<input id="text" type="text" size="60" value="Type your text here" />
<input type="button" value="When typing whatever text display the div balise on the page" onclick="check();" />
<script type="text/javascript">
function check() {
//Display my div balise named level0;
}
</script>
</body>
</html>
Thanks,
Bruno
EDIT: All my code (I've erased it because it was too long and not very clear)

You can use document.createElement("div") to actually make the div. Then you can populate the div using innerHTML for the text. After that, add it to the body using appendChild. All told, it can look like this:
function check() {
var div = document.createElement("div");
div.innerHTML = document.getElementById("text").value;
document.body.appendChild(div);
}
This will add a div every time the button is pressed. If you want to update the div each time instead, you can declare the div variable outside the function:
var div;
function check() {
if (!div) {
div = document.createElement("div");
document.body.appendChild(div);
}
div.innerHTML = document.getElementById("text").value;
}
If you have the div already in the page with an id of "level0", try:
function check() {
var div = document.getElementById("level0");
div.innerHTML = document.getElementById("text").value;
}

A quick search on google gave me this example:
Demo of hide/show div
The source-code for that example is:
<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
<html>
<head>
<title>Demo of Show hide div layer onclick of buttons</title>
<META NAME="DESCRIPTION" CONTENT="Displaying and hiding div layers through button clicks">
<META NAME="KEYWORDS" CONTENT="Show layer, hide layer, display div, hide div, button on click, button on click event, div property, div style set">
<style type="text/css">
div {
position: absolute;
left: 250px;
top: 200px;
background-color: #f1f1f1;
width: 280px;
padding: 10px;
color: black;
border: #0000cc 2px dashed;
display: none;
}
</style>
<script language="JavaScript">
function setVisibility(id, visibility) {
document.getElementById(id).style.display = visibility;
}
</script>
</head>
<body>
<input type=button name=type value='Show Layer' onclick="setVisibility('sub3', 'inline');";><input type=button name=type value='Hide Layer' onclick="setVisibility('sub3', 'none');";>
<div id="sub3">Message Box</div>
<br><br>
</body>
</html>

Paste this code somewhere in your body
<div id="myDiv" style="display:none">
Hello, I am a div
</div>
Add this snippet into your check() function to display the otherwise-hidden content.
document.getElementById("myDiv").style.display = "block";
You could also change the div content programmatically thus:
document.getElementById("myDiv").innerHTML = "Breakfast time";
... would change the text to 'Breakfast time'.

You might want to look into jquery, it'll make your life 100 times easier.
Jquery is a javascript library (script) that you include and it allows you to manipulate the DOM very easily.
Start by adding the latest Jquery to your head which will allow you to use something like $(document).ready( )
The function inside .ready( fn ) is a callback function; it get called when the document is ready.
$("#lnkClick") is a selector (http://api.jquery.com/category/selectors/)
<html>
<head>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.4/jquery.min.js" type="text/javascript"></script>
<script type="text/javascript">
$(document).ready( function() {
$("#lnkClick").click( function() {
$("#level0").attr("style", "display: block;width: 100px; height: 100px; border: solid 1px blue;");
});
});
</script>
</head>
<body>
<div id="level0" style="display:none;">
</div>
Click me
</body>
</html>
Of course this code can be made cleaner. You want to check: http://api.jquery.com/click/
There are plenty of examples.
Best of luck with Jquery!

you really should be using jquery , there's a little bit of a learning curve but once you get it, developing web apps is much easier.
<html>
<head>
<script src="http://code.jquery.com/jquery-1.5.2.min.js"></script>
<script>
$(document).ready(function() {
$("#show_div_button").click(function() {
$("#div_to_show").show();
return false;
});
});
</script>
</head>
<body>
Click Me to Show the Div
<div style="display:none" id="div_to_show">I will be shown when the link is clicked</div>
</body>
</html>

Related

How can I make my div appear with createElement

I am trying to make another div right under the existing div in the HTML
<html>
<head>
<title>
Media Player
</title>
<script src="script.js"></script>
</head>
<script>
makeOscarPlayer(document.getElementById("my-video"))
</script>
<body>
<div class="my-player">
Hello!
</div>
</body>
</html>
function makeOscarPlayer(){
var div = document.createElement("div");
div.innerHTML = `
hello
`
}
can someone explain to me what I am doing wrong? I am a self-taught developer sorry if my code is not perfectly organized still learning
You are calling the makeOscarPlayer() function before you are creating it.
You need to wrap the makeOscarPlayer() function declaration in a script tag.
You are passing in document.getElementById("my-video") as a parameter to makeOscarPlayer(), but there is no HTML element with an id of 'my-video'. You are giving the function a parameter of null, while the function declaration has no parameters.
You need to tell the script where to put the new element. To do that, you grab an existing element and use parentNode and insertBefore
Here is a barebones version that I got working for your reference:
<html>
<head>
<title>
Media Player
</title>
</head>
<script>
</script>
<body>
<div id="my-player">
Hello!
</div>
</body>
</html>
<script type="text/javascript">
function makeOscarPlayer(){
var div = document.createElement("div");
div.innerHTML = `hello`;
// This grabs the element that you want to create a new element by
var existingDiv = document.getElementById("my-player");
// This tells the script where to put the new element
existingDiv.parentNode.insertBefore( div, existingDiv.nextSibling);
}
// Must be called in the same script block or after the script holding the function declaration is loaded
makeOscarPlayer();
</script>
For more information on how parentNode and insertBefore work, see this Stack Overflow question
You need to append that new element to a specific parent, in your case to my-video.
The function appendChild appends the new element to a parent element.
function makeOscarPlayer(parent) {
var div = document.createElement("div");
div.innerHTML = 'Hello from Ele';
parent.appendChild(div);
}
makeOscarPlayer(document.getElementById("my-video"))
#my-player {
border: 1px dashed green;
padding: 5px;
margin: 5px;
width: 300px;
background-color: #f1f1f1
}
#my-video div {
border: 1px dashed green;
padding: 5px;
margin: 5px;
width: 200px;
font-weight: 700;
}
<div id="my-player">
Hello!
<div id="my-video">
</div>
</div>
It's a good start, but you're calling the function incorrectly and your function isn't adding anything to the page.
we use appendChild to add a node to the page.
In your function you create and add text to a div, but you don't return the node you made(and also you didn't close your line of code with a semi-colon so I added that too) but this should work:
<html>
<head>
<title>
Media Player
</title>
</head>
<body>
<div class="my-player">
Hello!
</div>
<script>
function makeOscarPlayer() {
var div = document.createElement("div");
div.innerHTML = `hello`;
return div;
}
document.getElementById("my-video").appendChild(makeOscarPlayer())
</script>
</body>
</html>
function makeOscarPlayer() {
var div = document.createElement("div");
div.innerHTML = `hello`;
return div;
}
document.getElementById("my-video").appendChild(makeOscarPlayer())
<html>
<head>
<title>
Media Player
</title>
</head>
<body>
<!-- added my-video div -->
<div id="my-video"></div>
<div class="my-player">
Hello!
</div>
</body>
</html>

Expand collapse text with html

I would like to expand /collapse a text. I found several codes for that, but the issue they are using separates files for that .html
What I need is to have all of them set in the same doc, .html
Because I'm using a HTML editor, so I'm obliged to have all the code in the same page.
Please advise what to do or if there is a tutorial that would be very helpful.
Thank you in advance.
You can do this with pure HTML. Use <details>
<details>
<summary> click me </summary>
Text you want to expand or collide
</details>
Its that simple
Here you go study this and you will understand the basics:
W3Schools
Edit your code with this(there is allot more than just brackets):
Brackets
This is one page HTML with style tag and script tag:
Your css would go into the <style></style>
Your js would go into the <script></script>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html/js; charset=utf-8" />
<title>Untitled Document</title>
<style>
.page-header {
color: #000;
}
#click {
border-radius: 2%;
height: 30px;
color: green;
}
</style>
</head>
<body class="test">
<header class="page-header">SIMPLE EXAmPLE</header>
<div class="row">
<div class="element">
<div class="start" id="testdiv"></div>
<button id="click">click to color background</button>
</div>
</div>
</body>
<script type="text/javascript">
var clickAlert = document.getElementById('click');
var rainbow = ["red", "blue", "green", "yellow"];
function change() {
document.body.style.background = rainbow[Math.floor(4*Math.random())];
}
clickAlert.addEventListener("click", change);
</script>
</html>

Duplicating div elements and their CSS on button click

I'm working on a page that has a div with the id "exam" and a button with the id "copy". The div includes the text "Exam 1" and has a 2px double black border around it. When the button is clicked, the div element is supposed to be duplicated and displayed below each time the button is clicked. I have gotten that part to work, however, it doesn't seem to be copying the div element's CSS, only the text inside the element, so each time I click the button, it's only displaying "Exam 1", but not the border.
Here is my HTML (this also includes the Javascript and CSS):
<html>
<head>
<title>Exam 1 Tanner Taylor</title>
<style type="text/css">
#exam {
border: 2px double black;
}
</style>
</head>
<body>
<div id="exam">
Exam 1
</div>
<input type="button" id="copy" value="Make Copy" onclick="copy()" >
</body>
<script type = "text/javascript">
var TTi = 0;
var TToriginal = document.getElementById("exam");
function copy() {
var TTclone = TToriginal.cloneNode(true);
TTclone.id = "exam" + ++TTi;
TToriginal.parentNode.appendChild(TTclone);
}
</script>
</html>
There's more to it, but I cut out the portions that didn't deal with this particular issue. Any ideas as to why it's not displaying the border around the text when the button is clicked?
The css is only targeting the id exam and all clones are changing that id. A possible solution would be to use [id^="exam"].
^= says if it starts with "exam" then use this style.
DEMO: http://jsbin.com/xupuqavecope/2/edit
<html>
<head>
<title>Exam 1 Tanner Taylor</title>
<style type="text/css">
[id^="exam"] {
border: 2px double black;
}
</style>
</head>
<body>
<div id="exam">
Exam 1
</div>
<input type="button" id="copy" value="Make Copy" onclick="copy()" >
</body>
<script type = "text/javascript">
var TTi = 0;
var TToriginal = document.getElementById("exam");
function copy() {
var TTclone = TToriginal.cloneNode(true);
TTclone.id = "exam" + ++TTi;
TToriginal.parentNode.appendChild(TTclone);
}
</script>
</html>

Setting background color after setting background image

Following is the html-javascript code for setting the background image and background image.
<html>
<link rel="stylesheet" type="text/css" href="try2.css">
<body>
Choose the color<br>
<div class="foo" id="#13b4ff" style="background-color:#13b4ff;"></div>
<div class="foo" id="ab3fdd" style="background-color:#ab3fdd;"></div>
<div class="foo" id="ae163e" style="background-color:#ae163e;"></div>
<br><br>
<div id="myframe1" style="padding:5px;width:300px;height:400px;border:1px solid black;">
<p><img src="img-thing.png" style="width:200px;height:200px;"/><p>
</div>
<script type="text/javascript" src="http://jqueryjs.googlecode.com/files/jquery-1.3.2.min.js"> </script>
<script type="text/javascript">
$(document).ready(function(){
$('.foo').click(function(){
var str1 = $(this).attr('id');
var myframe = document.getElementById('myframe1');
myframe.style.backgroundColor=str1;
myframe.style.width=300;
myframe.style.height=400;
});
});
</script>
<div><input type='file' onchange="readURL(this);" />
<img id="blah"/></div>
<script src="http://code.jquery.com/jquery-1.11.0.min.js"></script>
<script type="text/javascript">
function readURL(input) {
if (input.files && input.files[0]) {
var reader = new FileReader();
reader.onload = function (e) {
$('#myframe1').css({
'background':'url('+e.target.result +')',
'background-size':'310px 410px'
});
};
reader.readAsDataURL(input.files[0]);//To display images uncomment this
}
}
</script>
</body>
</html>
The CSS FILE FOR COLORS IS(just in case you need to look at that as well)
.foo {
float: left;
width: 20px;
height: 20px;
margin: 5px 5px 5px 5px;
border-width: 1px;
border-style: solid;
border-color: rgba(0,0,0,.2);
}
Now the problem is:
I want that user may click upload image option first and upload the image as a background. But once that is done it not allowing user to se color as a background. How to fix that? On the contrary if color is choosen and then image, image can override as background.I want that both must be able to override each other. For convenience I also the fiddle link : here Also one more issue in the fiddle, other colors are not showing up, but they are working in my html file.
First of all correct your id name of class foo . use # in all ids ok
next empty the background of the div while on clicking of color div by
myframe.style.background="";
: Here is your corrected working code now
I think you can achieve by adopting two DIVs, one of them is used to render background images and the other render background color.
By changing 'z-index' of DIV, you can display COLOR at top or bottom.
Hope this can help you .
The following code should work under mainstream browser.
Take a try.
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title> New Document </title>
<meta name="Generator" content="EditPlus">
<meta name="Author" content="">
<meta name="Keywords" content="">
<meta name="Description" content="">
</head>
<style>
#DivBgColor,#DivBgImage{
position:absolute;
left:100px;
top:100px;
width:300px;
height:300px;
}
#DivBgColor{background-color:red;z-index:2}
#DivBgImage{background-image: url(https://s.yimg.com/rz/l/yahoo_en-US_f_p_142x37.png);background-repeat: no-repeat;z-index:4}
</style>
<script language=javascript>
function makeColorAbove(){
var objColor = document.getElementById("DivBgColor");
var objImage = document.getElementById("DivBgImage");
objColor.style.zIndex=2;
objImage.style.zIndex=1;
}
function makeImageAbove(){
var objColor = document.getElementById("DivBgColor");
var objImage = document.getElementById("DivBgImage");
objColor.style.zIndex=1;
objImage.style.zIndex=2;
}
</script>
<body>
<div id="DivBgColor" ></div>
<div id="DivBgImage"></div>
<input type=button value="makeColorAbove" onclick="makeColorAbove()">
<input type=button value="makeImageAbove" onclick="makeImageAbove()">
</body>
</html>

Why is the javascript not working on all referenced IDs

I'm working on a Joomla website. Now I need a slider to change when someone hovers over a text link. I'm using some javascript. It's working on the first div with the id=slider, but not on the second div with id=slider in the article. Can someone tell me why it's doing this?
I'm using the following code in a custom code module for Joomla.
<html>
<head>
<meta http-equiv="content-type" content="text/html;charset=iso-8859-1">
<title>Untitled Page</title>
<style type="text/css" media="screen">
<!--
.boxVisible {
background-color: #eee;
display: block;
padding: 5px;
float: left;
border: solid 1px #000040
}
.boxHidden {
display: none;
}
-->
</style>
<script type="text/javascript">
<!--
function showHide(slider) {
theBox = document.getElementById(slider);
if (theBox.className == "boxVisible") {
theBox.className = "boxHidden";
} else {
theBox.className = "boxVisible";
}
}
//-->
</script>
</head>
<body bgcolor="#ffffff">
<p>More</p>
</body>
</html>
This is my article:
<div id="slider" class="boxVisible">{loadposition slider1}</div>
<div id="slider" class="boxHidden">{loadposition slider2}</div>
<p><br /><br /><br /> {loadposition java}</p>
IDs must be unique identifiers. For multiple elements, use class names.
Id's should be unique on a page.
You could wrap your slider divs in a wrapper div and use that as basis for iterating through your sliders something like this.
HTML:
<div id="sliders">
<div class="boxVisible"></div>
<div class="boxHidden"></div>
</div>
Javascript:
function showHide2(slider) {
var sliders = document.getElementById(slider).getElementsByTagName("div");
for (s in sliders) {
if (sliders.hasOwnProperty(s)) {
if (sliders[s].className == "boxVisible") {
sliders[s].className = "boxHidden";
alert('changed visible');
} else if (sliders[s].className == "boxHidden") {
sliders[s].className = "boxVisible";
alert('changed hidden');
}
}
}
}
showHide2("sliders");
the dom elements can't have the same id's! if you give the same id to the multiple dom elements, javascript will take only the first one.

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