JavaScript数组和循环详解(4)

<script type="text/javascript">
    if (!Array.prototype.some) {
        Array.prototype.some = function (fun/*, thisp*/) {
            var i = 0,
                len = this.length >>> 0;
            if (typeof fun != "function") {
                throw new TypeError();
            }

var thisp = arguments[1];
            for (; i < len; i++) {
                if (i in this
                    && fun.call(thisp, val, i, this)) {
                    return true
                }
            }

return false;
        };
    }

if (!Array.prototype.every) {
        Array.prototype.every = function (fun/*, thisp*/) {
            var len = this.length >>> 0;
            if (typeof fun != "function") {
                throw new TypeError();
            }

var thisp = arguments[1];
            for (var i=0; i < len; i++) {
                if (i in this
                    && fun.call(thisp, val, i, this)) {
                    return false
                }
            }

return true;
        };
    }
</script>

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