JavaScript gets the Get parameter method (get URL parameter method) in detail

There are many ways to get URL parameters on the Web, and I have added comments to them. Do not know the friend can give me a message

1<script type= "Text/javascript" >2         functiongetrequest () {3 4             varurl = location.search;/*The search property is a readable, writable string .5 you can set or return the query portion of the current URL (the question mark, the section after it). */  6 7             vartherequest=NewArray ();//define an array8 9             if(Url.indexof ("?")! =-1) {/*the IndexOf () method can return a specified characterTen The position at which the string value first appears in strings. -1 means non-existent*/ One  A                 varstr = URL.SUBSTR (1);//Intercept A string -STRs = Str.split ("&");//split into arrays -                  for(vari = 0; i < strs.length; i + +) {   the                     //combine the passed parameters into Key=>val form -Therequest[strs[i].split ("=") [0]]=unescape (Strs[i].split ("=") [1]);  -                 }    -             }    +             returntherequest;  -         }    +         //Invocation Method Example: "Index.html?a=1&b=2&c=3" A         varrequest=getrequest (); at         varA=request[' a ']; -         varb=request[' B ']; -         varc=request[' C ']; -</script>

JavaScript gets the Get parameter method (get URL parameter method) in detail