判断value是否有效值

Std.source("StdJS","http://source.stdjs.com/0.1");
Std.use("ui.LineEdit");
Std.main(function(){
    var lineEdit = Std.ui("LineEdit",{
        validator:"Number",
        value:"text",
        renderTo:"body"
    });

    if(lineEdit.valid()){
        console.log("right");
    }else{
        console.log("error");
    }
});