关于bootstrap-datetimepicker.js不支持IE8的解决办法

    if (!Array.prototype.indexOf)

        Array.prototype.indexOf = function (elt /*, from*/) {
            var len = this.length >>> 0;

            var from = Number(arguments[1]) || 0;
            from = (from < 0)
                    ? Math.ceil(from)
                    : Math.floor(from);
            if (from < 0)
                from += len;

            for (; from < len; from++) {
                if (from in this &&
                        this[from] === elt)
                    return from;
            }
            return -1;
        };

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