I am facing an issue with 3 usercontrols on a page. Each usercontrol has a pageLoad function in JavaScript, and the page itself also has a pageLoad function. However, only the pageLoad function of the last usercontrol that I registered is being fired, while the others are not.
<script type="text/javascript">
...
function pageLoad() {
alert('page load - uc1');
.....
}
...
Can someone please assist me on how to ensure all functions are fired?
Thank you
Create a custom JavaScript function for each control and trigger it during the Application.Init and PageRequestManager.EndRequest events in your web application:
On the client side:
function controlSpecificPageLoadFunction(){ alert("Hello, pageLoad!"); }
In the code behind:
if(!IsPostBack)
{
var script = "Sys.Application.add_init(controlSpecificPageLoadFunction); Sys.WebForms.PageRequestManager.getInstance().add_endRequest(controlSpecificPageLoadFunction)";
ScriptManager.RegisterStartupScript(this, this.GetType(), "thisControlPageLoad", script, true);
}
Have you heard of the rising trend known as unobtrusive JavaScript? It's gaining popularity, so it might be worth looking into
Check out this link for more information
You can also learn more on Wikipedia
Instead of using inline event handlers like onload="myfunction()", consider attaching event listeners directly in your JavaScript code...
document.getElementById('myElement').addEventListener('click', myfunction)
function myfunction() { ... }
In your specific case, you could do something like this
document.body.addEventListener('load', myfunction);
Although this approach has its drawbacks. It may be better to utilize a framework such as jQuery, MooTools, Dojo or EXT rather than starting from scratch with JavaScript.
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