How to get url parameters in javascript

How to get url parameters in javascript: first create a js sample file; then define a "getQueryVariable" function; finally get the url parameters by calling this function.

The operating environment of this article: windows7 system, javascript version 1.8.5, Dell G3 computer.

javascript gets url parameters

The following JS function is used to get url parameters:

function getQueryVariable(variable)
{
       var query = window.location.search.substring(1);
       var vars = query.split("&");
       for (var i=0;i<vars.length;i++) {
               var pair = vars[i].split("=");
               if(pair[0] == variable){return pair[1];}
       }
       return(false);
}

Usage example

url example:

http://www.php.cn/index.php?id=1&image=awesome.jpg

Call getQueryVariable("id") to return 1.

Call getQueryVariable("image") to return "awesome.jpg".

[Recommended learning: javascript advanced tutorial]

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