About match and replace methods in JavaScript (detailed tutorial)
The editor below will introduce to you the match and replace methods of strings in JavaScript. It has a good reference value and I hope it will be helpful to everyone. Let’s follow the editor to take a look.
1. Match method
The match() method can retrieve the specified value within the string. Or find a match for one or more regular expressions.
The return value of the match() method is: an array storing the matching results.
2. Replace method
Thereplace() method is used to replace some characters with other characters in a string, or replace an The substring matched by the regular expression.
The return value of the replace method is: a new string.
3. Description
#The parameters of the above two methods mainly add global g when using regular expressions, so that the string can be processed Match or replace all.
Sample code:
<!DOCTYPE html> <html lang="zh"> <head> <meta charset="UTF-8" /> <title>JavaScript中字符串的match与replace方法</title> </head> <body> <!--注意src路径要对--> <script src="js/jquery-1.12.4.min.js" type="text/javascript" charset="utf-8"></script> <script type="text/javascript"> var str = "1 plus 2 equal 3"; //match方法返回值为数组 var arr = str.match(/[0-9]/g) console.log(arr); var new_str = str.replace(/[0-9]/g, 'newstr'); //replace方法返回值为新的字符串 console.log(new_str) </script> </body> </html>
The console output is:
The above is I compiled it for everyone, I hope it will be helpful to everyone in the future.
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