Select tab Drop-down List level Two linkage Cascade instance code

  This article mainly introduces the SELECT Tag Drop-down list level Two linkage Cascade instance code, you need friends can refer to the following

First from the server side, bind the Drop-down list, the level two drop-down of the text name according to a certain rule plus the first level Drop-down ID. The code is as follows: Var options=new Array ();     $ (document). Ready (function () {       //two-level linkage         $ (' #ddlPages '). Children (' option '). each (function (i) {            options[i]= ' <option value= ' +$ (This) . val () + ' > ' +$ (This). Text () + ' </option> ';        })//SET option list into array         $ (' #ddlPages option:gt (0) '). Remove ();    //Clear dropdown         $ (' #ddlSubsystems '). Bind (' Change ', function () {       //Registration Event             var systemname=$ (' #ddlSubsystems option:selected '). Text ();             for (Var j=0;j<options.length;j++) {                $ (' #ddlPages '). Append (Options[j]);             {   //option list initial             $ (' #ddlPAges option:gt (0) '). each (function (i) {   //traversal exclusion                 var text name=$ (This). text ();                 var index=textname.indexof ('-' +systemname);                 if (index<0) {              & nbsp     $ (this). Remove ();                }else{                &NB Sp   $ (this). Text (textname.substring (0,index));                 (           });             $ (' #ddlPages '). val (0);                            //default selected first line     & nbsp  });    });