es6 - array for-chrome

 // 去重复
 Array.from(new Set([1, 1, 2, 3]));         // [1, 2, 3]
 console.log(Array.from(new Set([1, 1, 2, 3])));

 // 分解字符串
 Array.from('hello');                       // ["h", "e", "l", "l", "o"]
 console.log(Array.from('hello'));

 // 转换为ascill
 Array.from('hello', x => x.charCodeAt(0)); // [104, 101, 108, 108, 111]
 let ascill = Array.from('hello', x => x.charCodeAt(0));
 console.log(ascill, typeof (ascill));

 // 获取节点
 let divs = document.querySelectorAll('div');
 Array.from(divs).forEach(function (node) {
     console.log(node);
 });

 // 数组合并
 let i = [2, 3, 5, 6];
 let j = [1, 2, 3, 4];
 let k = Array.of('hello', 666, i, j);
 console.log(k);
 Array.of('hello');      // ["hello"]
 Array.of(1, 2, 3);      // [1, 2, 3]
 Array.of('blink', 182); // ["blink", 182]

 // 替换数组内容
 // target = 数组位置(3) ,目标等于start数组位置内(0 ~ array.length-1)
 let copyWithin1 = [0, 1, 2, 3, 4].copyWithin(target = 3, start = 0);
 console.log('copyWithin1:', copyWithin1);

 // target = 数组位置(3) ,目标等于start数组位置内(0 ~ array.length-1),结束位置是4
 let copyWithin2 = [0, 1, 2, 3, 4].copyWithin(target = 0, start = 3, end = 4);  // [3, 1, 2, 3, 4]
 console.log('copyWithin2:', copyWithin2);

 // fill  - 填充
 [0, 1, 2, 3, 4].fill(5);                 // [5, 5, 5, 5, 5]
 // 第二个以后开始fill填充
 [0, 1, 2, 3, 4].fill(5, start = 2);        // [0, 1, 5, 5, 5]
 // 第二个开始填充，下标4结束.
 [0, 1, 2, 3, 4].fill(5, start = 2, end = 4); // [0, 1, 5, 5, 4]

 // 字符串包含 - es6
 function startsWithLetterA(e, index, array) {
     // 包含开头内容a  - es6 字符串搜索
     console.log(e, index, array);
     if (e.startsWith('a')) {
         return e;
     }
 }
 var cuteNames = ['jeff', 'marc', 'addy', 'francois'];
 cuteNames.find(startsWithLetterA); // "addy"

 // 字符串包含 - 返回下标
 function startsWithLetterA(element, index, array) {
     if (element.startsWith('a')) {
         return element;
     }
 }
 var cuteNames = ['jeff', 'marc', 'addy', 'francois'];

 cuteNames.findIndex(startsWithLetterA); //

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