对Ajax使用回调

Question

I want to prevent a function to execute before get a value from ajax, I'm trying using async:false it works but deprecated. So, I'm using callback like what I found on internet. It's works too, but the browser still tell me if the callback is not the function. Here's my code

function User() {
    this.nama;
    this.nis;
    this.pass;
    this.role;
    this.url = "http://localhost/elearning-web/";
    
    this.Login = function(call) {
        $.ajax({
            type:"POST",url:this.url+"dologin.php",data:"nis="+this.nis+"&pass="+this.pass,
            success:function(e){
                call(e);
            }
        });
    }
}

When I check the console.log it's show what I want to display, but the browser tell me if the call (callback) is not a function. Thanks in advance

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Answer 1

The call argument, that you are passing to the method Login must be a function, for example:

var call = somethingFunction(){ return 'called!';}
var user = new User();
user.Login(call)