Implementation method of replacing all strings in jQuery

How much do you know about jQuery string replacement? This article mainly introduces jQuery's method of replacing all strings, which has a good reference value. Let's take a look with the editor below, I hope it can help everyone.

Everyone knows that jquery has a replace method that can replace "" in a string with any character, but it can only replace one place. If there are multiple places, you can only use regular expressions. The last code to process

var title = "aaa aaa aaa";
var re = new RegExp(" ","g"); //定义正则表达式
//第一个参数是要替换掉的内容，第二个参数"g"表示替换全部（global）。
newTitle = title!=null?title.replace(re, "_"):title;
//三目运算

is to replace " " with _

according to the re regular expression rules. In addition, there are regular testing tools on the front-end website. Recently, I also Let’s continue to learn regular rules, let’s work together! ! !

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