How to fix '$' was used before it was defined in both jslint and jshint using coding?

问题

I am using jQUery . And in jslint, I keep on

'$' was used before it was defined.

or

document was used before it was defined.

I know I can stop those from showing up by using

/*jslint browser: true*/
/*global $, jQuery*/

But I wanted to actually fix this through coding if possible. So, I did like before.

var $, document;
$(document).ready(function () {
    "use strict";

However, now it says

Two warnings
1   Redefinition of '$'.
1   Redefinition of 'document'.

in jshint. Is there a coding that I can use to please both jshint and jslint?

回答1:

Please use jslint comments. The following suggestion uses a few tricks. Having tricks in your code won't help for maintainability. Here is the code:

var myApplication = function () {
    "use strict";
    var $ = this.$, document = this.document, console = this.console;
    $(document).ready(function () {
        //...
        console.log("test");
    });
};

myApplication.call(this);

回答2:

You cannot, and don't have to, fix it by coding. $ does in fact exist as global variable in a different file. That's exactly what /*global ... */ is for.

来源：https://stackoverflow.com/questions/25460567/how-to-fix-was-used-before-it-was-defined-in-both-jslint-and-jshint-using-co