Jquery.validate remote verification Another way of writing

functionCheckName () {varDeferred = $. Deferred ();//Delay Method    varName = $ ("#name"). Val (); varNames = $ ("#names"). Val (); varPid = $ ("#pNodeId"). Val (); varNodeId = $ ("#nodeId"). Val (); $.ajax ({type:"POST", URL:".. /category/verifyname ", Async:false, data:{name:$ ("#name"). Val (), pid:$ ("#pNodeId"). Val (), NodeId: $ ("#nodeId"). Val ()}, DataType:"HTML", Success:function(data, type) {if(data== "OK") {deferred.resolve (); }Else{deferred.reject ();    }              }    }); //deferred.state () has 3 states: pending: Not yet finished, rejected: failed, resolved: Success    returnDeferred.state () = = "Resolved"?true:false;} 

Remote is implemented by means of Addmethod:

function (value, Element) {    return  checkname ();},' name already exists ');

Called in Jquey.validate

// The form checks $ (' #form '). Validate ({    submithandler:function(form) {        if　　(CheckName ()) {// before submitting again to verify the duplicate name         form.submit ();    }    },    rules: {        name: {                true,                byterangelength: [2, +],        Valcheckname: true         },        Note: {byterangelength: [3, +]}}      );            

Jquery.validate remote verification Another way of writing