向每个数组元素的开头添加文本

I have an array which contains the contents as follows:

我有一个数组，其中包含如下内容:

["ZS125-48ATab", "STR125YBTab", "KS125-24Tab", "ZS125-50Tab", "DFE125-8ATab", "ZS125-30Tab", "HT125-8Tab", "HT125-4FTab", "STR50Tab"]

Is it possible to append a # symbol to the front of each element in the array.

是否可以将#符号附加到数组中每个元素的前面。

Thanks.

谢谢。

7 个解决方案

#1

for(var i=0;i<array.length;i++){
    array[i]="#"+array[i];
}

#2

Iterate over the array and just add #

遍历数组并添加#

var arr = [your array];

for (var i=arr.length; i--;) {
    arr[i] = '#' + arr[i];
}

FIDDLE

小提琴

In newer browsers you could do

在更新的浏览器中，你可以这样做

arr = arr.map(function(e) {return '#' + e});

#3

Example for ES6

例子ES6

var arr = ['first', 'second', 'third'];    
arr = arr.map(i => '#' + i);

Result:

结果:

console.log(arr); // ["#first", "#second", "#third"]

#4

You can do it like this :

你可以这样做:

array = ('#' + array.join('#')).match(/#[^#]*/g) || []; // null || []

The following trick works as well, but I wonder why split ignores the first sharp...

下面的技巧也同样有效，但是我想知道为什么split忽略了第一个sharp……

array = ('#' + array.join('#')).split(/(?=#)/);

Indeed, I rather expected this scenario : "#a#b#c" -> ["", "#a", "#b", "#c"].

事实上,我预计这一场景:“# # # c b”- >[”“、”#“b”#”、“# c”)。

Anyway, I prefer the second method since match returns null in case of failure.

无论如何，我更喜欢第二个方法，因为如果失败，match将返回null。

#5

Use the forEach method(reference)

使用forEach方法(参考)

var array = ["ZS125-48ATab", "STR125YBTab", "KS125-24Tab", "ZS125-50Tab", "DFE125-8ATab", "ZS125-30Tab", "HT125-8Tab", "HT125-4FTab", "STR50Tab"];
array.forEach(function(element, index) {
    array[index] = '#' + element;
});

#6

The following code would do the job:

下面的代码将完成这项工作:

var t = ["ZS125-48ATab", "STR125YBTab", "KS125-24Tab", "ZS125-50Tab", "DFE125-8ATab", "ZS125-30Tab", "HT125-8Tab", "HT125-4FTab", "STR50Tab"];

    for(var i=0;i<t.length;i++){
        t[i] = "#"+t[i];   
    }

See demo here

看到演示

#7

Simple & sweet in ES6 as,

简单甜蜜的ES6 as，

array.map((line) => `#${line}`);

#1

for(var i=0;i<array.length;i++){
    array[i]="#"+array[i];
}

#2