JS get URL parameter code instance sharing (JS operation URL) _javascript tips

The code is very simple, the main idea is to parse the URL parameters to JS object, and then do add, delete, change, check the operation is very convenient ~, take notes here.

Copy Code code as follows:

var lg= (function (LG) {
var objurl=function (URL) {
this.ourl=url| | Window.location.href;
This.href= ""; the front part
This.params={};//url Parameter Object
This.jing= "";//#及后面部分
This.init ();
}
Parse the URL, get the front deposit this.href, the parameter resolves to the This.params object, #号及后面存入this. Jing
Objurl.prototype.init=function () {
var Str=this.ourl;
var index=str.indexof ("#");
if (index>0) {
THIS.JING=STR.SUBSTR (index);
Str=str.substring (0,index);
}
Index=str.indexof ("?");
if (index>0) {
This.href=str.substring (0,index);
Str=str.substr (index+1);
var parts=str.split ("&");
for (Var i=0;i<parts.length;i++) {
var kv=parts[0].split ("=");
THIS.PARAMS[KV[0]]=KV[1];
}
}
else{
This.href=this.ourl;
this.params={};
}
}
Just modify the This.params
Objurl.prototype.set=function (key,val) {
This.params[key]=val;
}
Just set This.params
Objurl.prototype.remove=function (key) {
this.params[key]=undefined;
}
Based on the three-part URL after the operation
Objurl.prototype.url=function () {
var strurl=this.href;
var objps=[];//here is organized with arrays, and then join operations
For (var k in this.params) {
if (This.params[k]) {
Objps.push (+ + "=" +this.params[k]);
}
}
if (objps.length>0) {
strurl+= "?" +objps.join ("&");
}
if (this.jing.length>0) {
strurl+=this.jing;
}
return strurl;
}
Get the value of the parameter
Objurl.prototype.get=function (key) {
return This.params[key];
}
Lg. Url=objurl;
return LG;
} (Lg| | {}));

LG is just my personal common JS namespace, without him. Call:

Copy Code code as follows:

var myurl=new LG. URL ("Http://www.baidu.com?a=1");

Myurl.set ("B", "Hello"); Added the B=hello
Alert (Myurl.url ());

Myurl.remove ("B"); deleted the B

Alert (Myurl.get ("a"))//Take the value of parameter A, here get 1

Myurl.set ("a", 23); Modify A to a value of 23

Alert (Myurl.url ());