javascript - 替换字符串中所有字符实例的最快方法(Fastest method to replace all instances of a character in a string)

Question

What is the fastest way to replace all instances of a string/character in a string in JavaScript?(用JavaScript替换字符串中所有字符串/字符实例的最快方法是什么？)

A while , a for -loop, a regular expression?(while ，一个for循环，一个正则表达式？)   ask by Anri?tte Myburgh translate from so

Answer 1

The easiest would be to use a regular expression with g flag to replace all instances:(最简单的方法是使用带有g标志的正则表达式替换所有实例：)

str.replace(/foo/g, "bar") This will replace all occurrences of foo with bar in the string str .(这将用字符串str bar替换所有出现的foo 。) If you just have a string, you can convert it to a RegExp object like this:(如果只有字符串，可以将其转换为RegExp对象，如下所示：) var pattern = "foobar", re = new RegExp(pattern, "g");