check post back in javascript

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hi all
i want to know how to check post back in java script , i have written this code but the alert didn't appear yes or no

JavaScript

var isPostBack = "<%Response.Write(Page.IsPostBack);%>";
       alert(isPostBack);

so, any help please

Thanks

Posted 11-Dec-12 22:55pm

2 solutions

you can also try this.

var itsPostBack = <%= Page.IsPostBack ? "true" : "false" %>;
alert(itsPostBack);

Posted 20-Jun-13 21:38pm

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IpsitaMishra · Accepted Answer · 2012-12-11T22:59:00

Posted 11-Dec-12 22:59pm