javascript - show image from chache browser - 


  var timestamp = new date().gettime();   $("#caplogin").attr("src", "image/captcha/captchacontrol.aspx?id="+timestamp);

or

  $("#caplogin").attr("src", "image/captcha/captchacontrol.aspx?id="+math.random());

but still shows duplicate image in successive application

to prevent page being cached on browser, try adding these lines header:

<meta http-equiv="pragma" content="no-cache"> <meta http-equiv="expires" content="0">

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