JQuery code not working
Why is the following code giving an exception?
function SetText(index, text) {
try {
$('p')[index].innerHTML = text;
}
catch (ex) {
alert(ex);
}
}
$(document).ready(SetText(2, 'Damn'));
the exception is:
TypeError: $('p')[index] is undefined
This is my code file:
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="SelectingFromAnElementGroup.aspx.cs" Inherits="JQuery_Intellisence_Test.SelectingFromAnElementGroup" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title></title>
<script src="Javascript/jquery-1.3.2.js" type="text/javascript">
/// <reference path="jquery-1.3.2-vsdoc.js" />
</script>
<script type="text/javascript">
function SetText(index, text) {
try {
$('p')[index].innerHTML = text;
}
catch (ex) {
al开发者_如何学编程ert(ex);
}
}
$(document).ready(SetText(2, 'Damn'));
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<p>This is 1st Paragraph</p>
<p>This is 2nd Paragraph</p>
<p>This is 3rd Paragraph</p>
<p>This is 4th Paragraph</p>
<p>This is 5th Paragraph</p>
</div>
</form>
</body>
</html>
Try that and tell us what happens:
$(document).ready(function() { SetText(2, 'Damn') });
I think your function is called before the DOM is ready.
<html>
<head>
<script src="http://www.google.com/jsapi"></script>
<script type="text/javascript">
google.load("jquery", "1.3.2");
function SetText(index, text) {
try {
if (typeof $('p')[index] !='indefined') $('p')[index].innerHTML = text;
} catch (ex) {
alert(ex);
}
}
</script>
</head>
<body>
<p>Paragraph 0</p>
<p>Paragraph 1</p>
<p>Paragraph 2</p>
<script type="text/javascript">
$(function() {SetText(2, 'Damn');});
</script>
</body>
</html>
Your code needs to be checked by
if (typeof $('p')[index] !='indefined')
加载中,请稍侯......
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