How to replace string in javascript

Methods for string replacement in js: 1. Directly use "str.replace("String to be replaced", "New String")" to replace; 2. Use regular expressions to replace, The syntax format is "str.replace(/string to be replaced/g, "new string")".

The operating environment of this tutorial: Windows 7 system, JavaScript version 1.8.5, Dell G3 computer.

Replacement of strings in js, you can use the following method to replace all strings in js:

General

str.replace("需要替换的字符串"，"新字符串")

Regular

str.replace(/需要替换的字符串/g，"新字符串")

For example:

"yyyy-MM-dd-hh-mm-ss".replace("-","/")
"yyyy-MM-dd-hh-mm-ss".replace(/-/g,"/")

The results are as follows:

"yyyy/MM-dd-hh-mm-ss"
"yyyy/MM/dd/hh/mm/ss"

It follows that regular replacement will only replace the first matching character, while regular replacement can replace all.

Recommended learning: javascript video tutorial

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