JavaScript之正方教务系统自动化教评[插件-转载]

/**
     * @name:正方教务系统自动化教评-插件
     * 
     * @author:chenzhongshu
     * @date:2017-07-04
     * @notice:原生js;无需依赖项
     *
     */
    (function() {
        var courseCode;
        var timer;

        var autoFill = function() {
            var frame = document.getElementById(‘rightDiv‘).querySelector(‘iframe‘).contentWindow.document;
            var divJs = frame.getElementById(‘divJs‘);
            var items = divJs.querySelectorAll(‘select‘);

            if (!frame.getElementById(‘pjkc‘))
                return false;

            var newCourseCode = frame.getElementById(‘pjkc‘).value;
            if (newCourseCode == courseCode) {
                clearInterval(timer);
                console.log(‘评价完成‘);
                return true;
            }
            courseCode = newCourseCode;

            for (i = 0; i < items.length; i++)
                items[i].value = "1(完全同意)"
            frame.getElementById(‘Button1‘).click();
        }
        timer = setInterval(autoFill, 1000);
    })();