javascript - 在对象方法内的 jQuery 函数内获取对象参数值

Question

我有这个:

function test1()
{
    this.count = 0;
    this.active = 0;
    this.enable = function () {this.active = 1;}
    this.disable = function () {this.active = 0;}
    this.dodo = function ()
                {
                    $("html").mousemove(function(event) {
                        // I want to get here the "active" param value;                 
                    });
                }
    this.enable();
    this.dodo();
}

instance = new test1();
instance.disable();

假设我想在注释的地方检查 test1 类的事件参数。我怎样才能把它拿到那里？谢谢!

Answer 1

如果你想访问更高作用域的所有成员变量，你只需要将 this 指针从该作用域保存到局部变量中，这样你就可以在另一个作用域内使用它:

function test1() {
    this.count = 0;
    this.active = 0;
    this.enable = function () {this.active = 1;}
    this.disable = function () {this.active = 0;}
    var self = this;
    this.dodo = function () {
        $("html").mousemove(function(event) {
            // I want to get here the "active" param value;                 
            alert(self.active);
        });
    }
    this.enable();
    this.dodo();
}

instance = new test1();
instance.disable();