QiFeng.ZWY.MagWeb/Content/ProportionDiagram/js/lib/common.js

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/**
 * Created by liYang on 2017/10/25 0029.
 */
;
(function () {
    // forEach兼容性处理
    Array.prototype.forEach = Array.prototype.forEach ||
        function (fn, context) {
            for (var k = 0, length = this.length; k < length; k++) {
                if (typeof fn === "function" &&
                    Object.prototype.hasOwnProperty.call(this, k)) {
                    fn.call(context, this[k], k, this);
                }
            }
        };
    // map兼容性处理
    Array.prototype.map = Array.prototype.map ||
        function (fn, context) {
            var arr = [];
            if (typeof fn === "function") {
                for (var k = 0, length = this.length; k < length; k++) {
                    arr.push(fn.call(context, this[k], k, this));
                }
            }
            return arr;
        };
    // filter兼容性处理
    Array.prototype.filter = Array.prototype.filter ||
        function (fn, context) {
            var arr = [];
            if (typeof fn === "function") {
                for (var k = 0, length = this.length; k < length; k++) {
                    fn.call(context, this[k], k, this) && arr.push(this[k]);
                }
            }
            return arr;
        };
    // some兼容性处理
    Array.prototype.some = Array.prototype.some ||
        function (fn, context) {
            var passed = false;
            if (typeof fn === "function") {
                for (var k = 0, length = this.length; k < length; k++) {
                    if (passed === true) break;
                    passed = !!fn.call(context, this[k], k, this);
                }
            }
            return passed;
        };

    // every兼容性处理
    Array.prototype.every = Array.prototype.every ||
        function (fn, context) {
            var passed = true;
            if (typeof fn === "function") {
                for (var k = 0, length = this.length; k < length; k++) {
                    if (passed === false) break;
                    passed = !!fn.call(context, this[k], k, this);
                }
            }