foreach

最新推荐文章于 2020-11-04 14:59:41 发布

转载最新推荐文章于 2020-11-04 14:59:41 发布 · 50 阅读

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CC 4.0 BY-SA版权

原文链接：http://www.cnblogs.com/lhy-93/p/5741531.html

arryAll.forEach(function(e){  
    alert(e);  
})

IE兼容的foreach

if (!Array.prototype.forEach) {  
    Array.prototype.forEach = function(callback, thisArg) {  
        var T, k;  
        if (this == null) {  
            throw new TypeError(" this is null or not defined");  
        }  
        var O = Object(this);  
        var len = O.length >>> 0; // Hack to convert O.length to a UInt32  
        if ({}.toString.call(callback) != "[object Function]") {  
            throw new TypeError(callback + " is not a function");  
        }  
        if (thisArg) {  
            T = thisArg;  
        }  
        k = 0;  
        while (k < len) {  
            var kValue;  
            if (k in O) {  
                kValue = O[k];  
                callback.call(T, kValue, k, O);  
            }  
            k++;  
        }  
    };  
}

转载于:https://www.cnblogs.com/lhy-93/p/5741531.html