JSHint“可能严格违规。”当使用`bind`时 [英] JSHint "Possible strict violation." when using `bind`

问题描述

考虑这个简单的代码：

"use strict";

var obj = {
    f: function() {
        this.prop = 'value';
        g.bind( this )();
    }
};

function g() {
    console.log( this.prop );
}

如果我尝试验证此代码，jshint会给我错误可能严格违规。我在哪里调用 console.log（this.prop）; 。这是因为这个在函数的严格模式下是未定义的。

If I try to validate this code, jshint gives me the error Possible strict violation. where I call console.log( this.prop );. This is because this is undefined in strict mode in a function.

但我在调用之前绑定了这个函数它，所以这个是正确的对象。

But I'm binding this function before calling it, so this is the correct object.

我正在使用这种设计模式来避免混乱主要对象。传递参数中的属性也会使函数混乱，所以我拒绝这样做。此外，这正是 bind 的用途。

I'm using this "design pattern" to avoid cluttering the main object. Passing the properties in the parameters will also clutter the function, so I refuse to do this. Besides, this is exactly what bind is for.

JSHint是否有办法让我这样做？

Is there a way for JSHint to let me do this?

推荐答案

如果不运行代码，很难检测到这种情况。您可以使用选项 validthis 来取消此警告：

It is extremely hard to detect this case without running the code. You can use option validthis to suppress this warning:

"use strict";

var obj = {
    f: function() {
        this.prop = 'value';
        g.bind( this )();
    }
};

function g() {
    /*jshint validthis:true */
    console.log( this.prop );
}

需要注意的是，jshint注释是函数作用域。因此评论将适用于函数 g 及其内部函数，而不仅仅是下一行。

It is to be noted that jshint comments are function scoped. So the comment will work for the function g and its inner functions, not just the next line.

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