Parse js: how to obtain the parameter values in the current url and copy them to input _ basics-js tutorial

This article describes how to obtain the parameter values in the current url in js and copy them to the input file. For more information, see The Code is as follows:

Function getObject (objectId ){
If (document. getElementById & document. getElementById (objectId )){
Return document. getElementById (objectId );
} Else if (document. all & document. all (objectId )){
Return document. all (objectId );
} Else if (document. layers & document. layers [objectId]) {
Return document. layers [objectId];
} Else {
Return false;
}
}
Function get (p ){
// Var url = location. search;
Var url = document. URL. toString ();
Var tmpStr = p + "= ";
Var tmp_reg = eval ("/[\? &] "+ TmpStr +"/I ");
If (url. search (tmp_reg) =-1) return null;
Else {
Var a = url. split (/[\? &]/);
For (var I = 0; I if (a [I]. search (eval ("/^" + tmpStr + "/I "))! =-1) return a [I]. substring (tmpStr. length );
}
}
Window. onload = function (){

GetObject ("key"). value = get ("k ");
// The key is the name in the input, and the received value is the k parameter in the browser.
// K is the parameter name in the browser
}

Put the above Code at the bottom of the html page.