EDIT I Found the solution! credit goes entirely to the assistance I received from Mixel. For those who find themselves in the same predicament of needing to pull a div from an iframe without using onload here is the entire working code that I am using:
<html>
<head>
<title>Main page</title>
<style type="text/css">#hiddenframe {display:none;}</style>
<script type="text/javascript">
window.onload = function () {
var myUrl = "test.html"
document.frames['hiddenframe'].location.href = myUrl;
}
</script>
</head>
<body>
<div id="parent-div"></div>
<iframe id="hiddenframe"></iframe>
</body>
</html>
And the Child Page:
<html>
<head>
<title>Child Page</title>
<script type="text/javascript">
window.onload = function () {
parent.document.getElementById('parent-div').innerHTML = document.getElementById('daughter-div').innerHTML;
}
</script>
</head>
<body>
<div id="daughter-div">
This is the Child Div!
</div>
</body>
</html>
Thank you once again to Mixel for his help and patience in finding a solution
That's because you reload hiddenframe in onload handler. Reloading triggers onload event, then onload handler reloads hiddenframe. And this happens again and again...
Edit:
May be I do not understand what you want to do in your code, but if you want to load iframe when parent window is loaded you need this:
window.onload = function () {
document.getElementById('hiddenframe').setAttribute('src', 'test.html');
}
And there is window.onload handler of test.html page:
window.onload = function () {
parent.document.getElementById('parent-div').innerHTML = document.getElementById('daughter-div').innerHTML;
}
Edit2:
That's html of main page:
<div id="parent-div"></div>
<iframe id="hiddenframe">
</iframe>
And that's test.html:
<div id="daughter-div">
Child div!
</div>
Related
I want to prevent copying content loaded in iframe. I am using the following code [per this answer], and it works fine.
<html>
<head>
<title>Test</title>
<script type='text/javascript' src='//code.jquery.com/jquery-1.8.3.js'></script>
<script type='text/javascript'>
$(window).load(function () {
var $frame = $("#tif");
$frame.contents().bind("copy", function (e) {
e.preventDefault();
});
});
</script>
</head>
<body>
<iframe src="whatever.com" height="768" width="1366" id="tif"></iframe>
</body>
</html>
But when a pdf file is given as the source, the above code fails. Any suggestions?
<!DOCTYPE html>
<html>
<head>
<script type="text/javascript">
if (document.getElementById("popup")) {
window.alert("hi");
}
</script>
</head>
<body>
<h1 id="popup">dfdfs</h1>
</body>
</html>
i have a simple javascript which shows alert when the h1 id exits ,but i am not getting the alert message.code in jquery also can help.
Put your <script> tag at the end of the body:
<!DOCTYPE html>
<html>
<head>
</head>
<body>
<h1 id="popup">dfdfs</h1>
<script type="text/javascript">
if (document.getElementById("popup")) {
window.alert("hi");
}
</script>
</body>
</html>
Write your script after the element so that it runs after element is present. See the code:
<!DOCTYPE html>
<html>
<body>
<h1 id="popup">dfdfs</h1>
<script type="text/javascript">
if (document.getElementById("popup")) {
window.alert("hi");
}
</script>
</body>
</html>
Plunkr for the same is: "http://plnkr.co/edit/0fznytLHtKNuZNqFjd5G?p=preview"
Because, you're executing the script before document is completely loaded, the element #popup is not found.
Use DOMContentLoaded
Use DOMContentLoaded to check if the DOM is completely loaded.
<script type="text/javascript">
document.addEventListener("DOMContentLoaded", function(event) {
console.log("DOM fully loaded and parsed");
if (document.getElementById("popup")) {
window.alert("hi");
}
});
</script>
Using jQuery ready
Using jQuery, you can use ready method to check if DOM is ready.
$(document).ready(function() {
if ($("#popup").length) {
window.alert("hi");
}
});
Moving script to the end of body
You can move your script to the end of body.
<!DOCTYPE html>
<html>
<head>
</head>
<body>
<h1 id="popup">dfdfs</h1>
// Move it here
<script type="text/javascript">
if (document.getElementById("popup")) {
window.alert("hi");
}
</script>
</body>
</html>
Your script is above the h1 element that you're trying to retrieve. Because of this, it is being run before the element actually exists.
Either move the script to the bottom of the page, or wrap it in a jQuery ready block. And consider moving it to an external file.
$(function() {
if(document.getElementById("popup")) {
window.alert("hi");
}
});
try this easy way. no need of jquery.
<html>
<head>
</head>
<body>
<h1 id="popup">dfdfs</h1>
<script type="text/javascript">
if(document.getElementById("popup")) {
window.alert("hi");
}
</script>
</body>
</html>
It is good practice to use the <script> tags in <body> because it improves the performance by loading it quicker.
And then use
<body>
<script>
$(function() {
if(document.getElementById("popup")) {
window.alert("hi");
}
});
</script>
</body>
Below code gives you solution
$(document).ready(function() {
if (document.getElementById("popup")) {
window.alert("hi");
}
});
I am trying to create a program that generates random functions then shows them in LaTeX but I can't figure out how to edit LaTeX when a button is pressed.
This code works:
<html>
<head>
<script type="text/javascript" src="http://latex.codecogs.com/latexit.js"></script>
</head>
<body>
<div lang="latex" id='Latexdiv'></div>
<script>
document.getElementById('Latexdiv').innerHTML = 'sin(x)';
</script>
</body>
</html>
But this does not:
<html>
<head>
<script type="text/javascript" src="http://latex.codecogs.com/latexit.js"></script>
</head>
<body>
<div lang="latex" id='Latexdiv'></div>
<button onclick="change();">Change the LaTeX</button>
<script>
function change()
{
document.getElementById('Latexdiv').innerHTML = 'sin(x)';
}
</script>
</body>
</html>
I tried to use MathJax like this:
<html>
<body>
<button onclick='change();'>Change the LaTeX</button>
<div lang='latex' id='Latexdiv'></div>
<script type='text/javascript'>
var latexdiv = document.getElementById('Latexdiv');
function change()
{
var latex = document.createElement('script');
latex.src = 'http://latex.codecogs.com/latexit.js';
document.head.appendChild(latex);
var mathjax = document.createElement('script');
mathjax.src = 'https://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML';
document.head.appendChild(mathjax);
latexdiv.innerHTML = '\\(sin(x)\\)';
};
</script>
</body>
</html>
This, unfortunately, only works the first time you press the button. If you press it twice, it just shows "\(sin(x)\)" in regular HTML. How would you get it to work twice?
http://latex.codecogs.com/latexit.js executes at the end:
LatexIT.add('*');
That adds and onload listener that executes a render function, that's why works in the first case, the page ends loading after your first script.
You could simply add the render function in your change function.
function change()
{
document.getElementById('Latexdiv').innerHTML = 'sin(x)';
LatexIT.render('*',false);
}
I have a problem that some link we show is separeted from the rest of the page itself, so the link showes up immediatly as you open the page but the page takes 2-3 seconds to load, I'm trying to delay the link (in this example it's google) so it will show up a few seconds after the page is loaded.
am I getting close?
<!DOCTYPE html>
<html>
<head>
<title>Delay export link</title>
<script type="text/javascript">
function myFunction() {
myVar = setTimeout(show(), 2000);
}
function show() {
document.getElementById("Link").style.display = "inline";
}
function exportSrc() {
var scrt_var = "www.google.com;
document.getElementById("Link").setAttribute("href",scrt_var);
}
</script>
</head>
<style>
#Link{display:none;}
</style>
<body window.onLoad="myFunction();">
<a id="Link" onclick="exportSrc();" target='_blank'>
<img src="http://i57.tinypic.com/mkw779.png">
</a>
</div>
</body>
</html>
You have a few errors in your page which is stopping this from working:
Usually the first thing to check when something is not working is the browser console (press F12) and looks for errors. This won't fix problems with logic but should put you in a good position to start debugging things.
You have a missing " syntax error in exportSrc - this will show in the browser console
The load attribute in the body is incorrect. You should just use onload="myFunction()"
Your setTimeout is calling show instead of referencing it. Remove the ()s.
Put the <style> tags inside the <head>
You have an extra </div> tag
This should work better:
<!DOCTYPE html>
<html>
<head>
<title>Delay export link</title>
<style>
#Link{display:none;}
</style>
<script type="text/javascript">
function myFunction() {
myVar = setTimeout(show, 2000);
}
function show() {
document.getElementById("Link").style.display = "inline";
}
function exportSrc() {
var scrt_var = "www.google.com";
document.getElementById("Link").setAttribute("href",scrt_var);
}
</script>
</head>
<body onload="myFunction();">
<a id="Link" onclick="exportSrc();" target='_blank'>
<img src="http://i57.tinypic.com/mkw779.png">
</a>
</body>
</html>
Try
<body onLoad="myFunction();">
Instead of window.onLoad
The site like this:
`--main.html
`--dialog.html
`--folder
`--iframe.html
and the code is here:
main.html:
<html>
<head>
<script type="text/javascript">
function testframe() {
var doc = document.getElementById("frame").contentWindow;
doc.show();
}
</script>
</head>
<body>
<iframe src="folder/iframe.html" id="frame"></iframe>
<br/>
<button onclick="testframe()">test</button>
</body>
</html>
dialog.html:
<html>
<head>
</head>
<body>
This is modal dialog!
</body>
</html>
iframe.html:
<html>
<head>
<script type="text/javascript">
function show() {
showModalDialog('../dialog.html');
}
</script>
</head>
<body>
this is ifram
<br />
<button onclick="show()">show dialog</button>
</body>
</html>
When I click the show dialog button in the ifram,it show the modal dialog correctly.
When I click the test button outside the ifram ,it show the modal dialog incorrectly.
How can I fix this when I click the test button outside the ifram to show the correct page in the dilog?
iframeDomElement.contentWindow.setTimeout(function() {
iframeDomElement.contentWindow.childFunc();
}, 0);
This hack will make the relative path relative to the child window. Works in firefox and chrome，but not in safari.