jslint：为什么此代码会导致“严重违规”错误消息？

Question

Running the following simple code results in a "Strict violation." error message. I have been trying to find documentation on why, and how to fix it. Any input will be much appreciated.

The error:

Error:

Problem at line 6 character 4: Strict violation.

} (this));

The sample code:

/*jslint browser: true, onevar: true, undef: true, nomen: true, eqeqeq: true, plusplus: true, bitwise: true, regexp: true, strict: true, newcap: true, immed: true */

"use strict";

(function (window) {
} (this));

Regards, Egil.

Answer 1

To expand on Roland Illig's answer:

In non-strict mode, this is bound to the global scope when it isn't bound to anything else. In strict mode it is undefined. That makes it an error to use it outside of a method.

Answer 2

I had a look at the source code of jslint, which says:

function reservevar(s, v) {
    return reserve(s, function () {
        if (this.id === 'this' || this.id === 'arguments' ||
                this.id === 'eval') {
            if (strict_mode && funct['(global)']) {
                warning("Strict violation.", this);
            } else if (option.safe) {
                warning("ADsafe violation.", this);
            }
        }
        return this;
    });
}

I guess that jslint really complains that you are using this in a global context.