javascript String.prototype.replaceAll

[teazean]

StackOverflow: https://stackoverflow.com/questions/1144783/how-to-replace-all-occurrences-of-a-string-in-javascript

Regular Expression Based Implementation

String.prototype.replaceAll = function(search, replacement) {
    var target = this;
    return target.replace(new RegExp(search, 'g'), replacement);
};

Split and Join (Functional) Implementation

String.prototype.replaceAll = function(search, replacement) {
    var target = this;
    return target.split(search).join(replacement);
};

[teazean]

但是正则表达式的实现其实是有漏洞的，当 search 包含正则表达式的特殊字符时会出错。MDN 上有一个方法帮我们把一个 string 转化成 new RegExp 的参数。

function escapeRegExp(string) {
  return string.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'); // $& means the whole matched string
}