jsLint错误“无法设置未定义的属性“第一个"" [英] jsLint error "Cannot set property 'first' of undefined"

问题描述

在此小提琴上运行jsLint.脚本运行了，但是当jsLint告诉我第7行字符18的问题:无法设置未定义的属性'first'"时，该告诉我什么?

Run jsLint on this fiddle. The script runs, but what is jsLint telling me when it says "Problem at line 7 character 18: Cannot set property 'first' of undefined"?

使用示例代码小提琴:

(function($) {
    $.fn.selectBox = function(data) {
        for (var x = 0; x < data.length; x++) {
        }

        return this;
    };
})(jQuery);

推荐答案

这是因为要在其中定义 for 语句的变量.在外面声明并解决！我修复了其他一些警告. http://jsfiddle.net/SXajC/87/

It's because you're defining the variable for the for statement inside of it. Declare it outside and solved!. I fixed a few other warnings. http://jsfiddle.net/SXajC/87/

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