Adding text to beginning of each array element

Question

I have an array which contains the contents as follows:

[\"ZS125-48ATab\", \"STR125YBTab\", \"KS125-24Tab\", \"ZS125-50Tab\", \"DFE125-8ATab\", \"ZS125-30Tab         


        

Answer 1

Iterate over the array and just add #

var arr = [your array];

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

FIDDLE

In newer browsers you could do

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

Answer 2

Example for ES6

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

Result:

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

Answer 3

You can do it like this :

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

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

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

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

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

Answer 4

Simple & sweet in ES6 as,

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

Answer 5

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

Answer 6

Use the forEach method(reference)

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;
});