call jScript on Pageload

Question

2.00/5 (1 vote)

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this is my first time to write anything in jscript file, so please i need help

this is the function i wrote in jscript

C#

function SelectPage(DocURL) {
    var ID = document.URL;

    switch (DocURL) {
        case "Who We Are.aspx":
            document.getElementById("Td1").className = "itemHovered";
            break;
        case "Services.aspx":
            document.write("Super Saturday");
            break;
        case "Products.aspx":
            document.write("Sleepy Sunday");
            break;
        case "Clients.aspx":
            document.write("Sleepy Sunday");
            break;
        case "ContactUs.aspx":
            document.write("Sleepy Sunday");
            break;
        default:
            document.write("I'm looking forward to this weekend!");
    }

i want to call this fun on pageload
how can i do that
thankx in advance

Posted 2-Mar-12 5:57am

eman88

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3 solutions

Solution 4

You cannot, because the parameter of your function is not defined. You also need some code to calculate the value of DocURL, but this code cannot have any input parameters just because the onload handler does not have any parameters.

I suspect you need something different. This function can be called with some default parameter on load, and called from somewhere else, like menu handler, with all the parameters.

Another problem is hard-coded URLs. Do you know this principle, one of the most important in all practical programming: http://en.wikipedia.org/wiki/Don%27t_repeat_yourself[^]?

You could would require typing the some URLs elsewhere, which is no less but a support nightmare. You need to centralize all UTLs and associated data and code (handlers, messages you show) in one single object, the way no value would be repeated. This is just one of possible approaches.

—SA

Posted 3-Mar-12 18:48pm

Sergey Alexandrovich Kryukov

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JeremyKyle · Accepted Answer · 2012-03-02T06:00:00

Solution 1

You'll have to use 'Pagemethods' if you wanna call JS from CodeBehind in an aspx.. more info here:

http://www.google.com/search?gcx=w&sourceid=chrome&ie=UTF-8&q=pagemethods[^]

if you just want this code to run after page is ready, use Jquery and type

$(document).ready(function() {

//your code here


});

Posted 2-Mar-12 6:00am

JeremyKyle

Comments

eman88 2-Mar-12 12:10pm

thank u for ur answer :)

[no name] 2-Mar-12 12:18pm

My pleasure

ZurdoDev · Accepted Answer · 2012-03-02T06:03:00

There are several ways. You can use

C#

Page.ClientScript.RegisterStartupScript(this.GetType(), "AnyThing", "SelectPage();", true);

or in your aspx side you can use the onload method on the body tag.

HTML

<body onload="SelectPage();"></body>

Or you can even use jQuery's document.ready() function

JavaScript

$(document).ready(function () {
   SelectPage();
});