如何在javascript中每n个字符后插入一个字符？ [英] How can I insert a character after every n characters in javascript?

问题描述

我有一个字符串：快速的棕色狐狸跳过懒狗。

I have a string: "The quick brown fox jumps over the lazy dogs."

我想用javascript（可能用jQuery）来插入一个字符 n 个字符。例如，我想打电话：

I want to use javascript (possibly with jQuery) to insert a character every n characters. For example I want to call:

var s = "The quick brown fox jumps over the lazy dogs.";
var new_s = UpdateString("$",5);
// new_s should equal "The q$uick $brown$ fox $jumps$ over$ the $lazy $dogs.$"

目标是使用此功能插入& ;害羞成长串以允许它们包裹。也许有人知道更好的方法？

The goal is to use this function to insert &shy into long strings to allow them to wrap. Maybe someone knows of a better way?

推荐答案

function chunk(str, n) {
    var ret = [];
    var i;
    var len;

    for(i = 0, len = str.length; i < len; i += n) {
       ret.push(str.substr(i, n))
    }

    return ret
};

chunk("The quick brown fox jumps over the lazy dogs.", 5).join('$');
// "The q$uick $brown$ fox $jumps$ over$ the $lazy $dogs."

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