JavaScript包含es6 的相关内容

文章 2018-11-12 来自：开发者社区

JavaScript常用数组操作方法，包含ES6方法

一、concat() concat() 方法用于连接两个或多个数组。该方法不会改变现有的数组，仅会返回被连接数组的一个副本。 var arr1 = [1,2,3]; var arr2 = [4,5]; var arr3 = arr1.concat(arr2); console.log(arr1); //[1, 2, 3] console.log(arr3); //[1, ...

文章 2018-10-08 来自：开发者社区

JavaScript字符串操作方法大全，包含ES6方法

一、charAt() 返回在指定位置的字符。 var str="abc" console.log(str.charAt(1))//a 二、charCodeAt() 返回在指定的位置的字符的 Unicode 编码。 var str="abc" console.log(str.charCodeAt(1))//98 三、concat() 连接字符串。 var a = "abc"; ...

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更新时间 2023-06-13 11:01:06

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