Function each

_benchmarks/sample_echarts.js:358–377

(arr, cb, context)

        return typeof data.length === 'number';
    }
    function each(arr, cb, context) {
        if (!(arr && cb)) {
            return;
        }
        if (arr.forEach && arr.forEach === nativeForEach) {
            arr.forEach(cb, context);
        }
        else if (arr.length === +arr.length) {
            for (var i = 0, len = arr.length; i < len; i++) {
                cb.call(context, arr[i], i, arr);
            }
        }
        else {
            for (var key in arr) {
                if (arr.hasOwnProperty(key)) {
                    cb.call(context, arr[key], key, arr);
                }
            }
        }
    }
    function map(arr, cb, context) {
        if (!arr) {
            return [];