问题:

I am trying to autoreload my page after every 20 seconds. I am using JavaScript for this instead of the <meta>.

I have <body onload="SetTimer()"> and here is my JavaScript function

    function SetTimer(){
        setTimeout('window.location.replace(window.location.pathname)', 20000)
    }

Now my problem is I also pass a parameter within the querystring when this page is loaded first. But when the page relaods again (window.location.pathname does not include the parameter) hence I am not able to assign values to the labels on the page which is based on the parameters passed.

回答1:

Simple page reload also does a trick

function SetTimer(){ 
    setTimeout('window.location.reload(true)', 20000)
}

回答2:

 setTimeout('window.location.replace(window.location.href)', 2000);

did the trick

回答3:

window.location will include the GET parameters that were that was passed.

function SetTimer(){ 
    setTimeout('window.location.replace(window.location)', 20000)
}

If you are submitting parameters through POST, the best method will probably be to create a form with hidden inputs for each parameter. Submit the form every twenty seconds.