我尝试在函数运行后控制变量fullName,但它没有更改值,只是控制台默认值未设置,为什么会这样？
function test() {
this.clientData = {
fullName : "Not Set",setUserName: function (firstName,lastName) {
this.fullName = firstName + " " + lastName;
},getUserInput2: function (firstName,lastName,callback) {
callback(firstName,lastName);
}
};
this.getUserInput1 = function (firstName,callback) {
callback(firstName,lastName);
};
}
var test = new test();
test.getUserInput1("A1","B1",test.clientData.setUserName);
console.log("test.clientData.fullName : " + test.clientData.fullName);//Not Set
//expected => A1 B1
test.clientData.getUserInput2("A2","B2",test.clientData.setUserName);
console.log("test.clientData.fullName : " + test.clientData.fullName);//Not Set
//expected => A2 B2
解决方法
这很有效.你可以不使用bind()函数来做到这一点.你只需要将Test对象存储在变量中.
function test() {
var t = this
this.clientData = {
fullName : "Not Set",lastName) {
t.clientData.fullName = firstName + " " + lastName;
},callback) {
callback(firstName,lastName);
}
};
this.getUserInput1 = function (firstName,callback) {
callback(firstName,lastName);
};
}
var test = new test();
test.getUserInput1("A1",test.clientData.setUserName);
console.log("test.clientData.fullName : " + test.clientData.fullName);//Not Set
//expected => A1 B1
test.clientData.getUserInput2("A2",test.clientData.setUserName);
console.log("test.clientData.fullName : " + test.clientData.fullName);//Not Set