Js 的回调方法怎么写啊

@jumpchess1 写道：

AAA.js

let bbb = new BBB();
bbb.setCallback(this.response);
...
response: function(message) {
    cc.log(message);
},

BBB.js

properties: {
    response : null,
},

setCallback: function (re){
    this.response = re;
}

...
this.response(message);

最后报错 Connect.js:63 Uncaught TypeError: this.response is not a function
at XMLHttpRequest.xhr.onreadystatechange

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