How to force a script reload and re-execute?
I have a page that is loading a script from a third party (news feed). The src url for the script is assigned dynamically on load up (per third party code).
<div id="div1287">
<!-- dynamically-generated elements will go here. -->
</div>
<script id="script0348710783" type="javascript/text">
</script>
<script type="javascript/text">
document.getElementById('script0348710783').src='http://oneBigHairyURL';
</script>
The script loaded from http://oneBigHairyURL then creates and loads elements with the various stuff from the news feed, with pretty formatting, etc. into div1287 (the Id "div1287" is passed in http://oneBigHairyURL so the script knows where to load the content).
The only problem is, it only loads it once. I'd like it to reload (and thus display new content) every n seconds.
So, I thought I'd try this:
<div id="div1287">
<!-- dynamically-generated elements will go here. -->
</div>
<script id="script0348710783" type="javascript/text">
</script>
<script type="javascript/text">
loadItUp=function() {
alert('loading...');
var divElement = document.getElementById('div1287');
var scrElement = document.getElementById('script0348710783');
divElement.innerHTML='';
scrElement.innerHTML='';
scrElement.src='';
scrElement.src='http://oneBigHairyURL';
setTimeout(loadItUp, 10000);
};
loadItUp();
</script>
I get the alert, the div clears, but no dynamically-generated HTML is reloaded to it.
Any idea what I'm doing wrong?
Answer
How about adding a new script tag to <head> with the script to (re)load? Something like below:
<script>
function load_js()
{
var head= document.getElementsByTagName('head')[0];
var script= document.createElement('script');
script.src= 'source_file.js';
head.appendChild(script);
}
load_js();
</script>
The main point is inserting a new script tag -- you can remove the old one without consequence. You may need to add a timestamp to the query string if you have caching issues.