81,122
社区成员




$.ajax({
url:"verificationusername?username="+usernames,
type:"get",
dataType:"text",
success:function(data){
alert(typeof(data));//string
alert(data); //true
alert(data=="true"); //false
if(data=="true"){
alert("执行");
}
},
var data = "true"; data == true;
false
var data = true; data == true;
true
var data = true; typeof(data)
"boolean"
var data = "true"; typeof(data)
"string"
alert(data == 1);
1 != "true";
所以data != "true"