A brief analysis of two methods of implementing replaceAll in js

This article mainly discusses two methods of implementing replaceAll in js. Friends in need can take a look at it. I hope it can help everyone.

js does not provide the replaceAll method, and using a for loop has efficiency issues. Use a regular expression as a solution

• Method One
  

• . String.prototype.replaceAll = function(s1,s2){ 
  　　return this.replace(new RegExp(s1,”gm”),s2); 
  　　}

• Method Two
  

• . string.replace(new RegExp(oldString,”gm”),newString)) 
  　　gm g=global, m=multiLine ， 大致上方法就是这样的，可以实现替换全部指定字串

<span style='font-family: 微软雅黑, "Microsoft YaHei"; font-size: 14px;'>If you don’t use regular expressions<br> str.replace(findStr, replaceStr) can only replace the first </span>

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