Home >Web Front-end >JS Tutorial >How to replace characters in a javascript string
In JavaScript, you can use the replace() method of the String object to replace characters in the string. The syntax is "str.replace("String to be replaced", "New String")" or " str.replace(/String to be replaced/g, "new string")".
The operating environment of this tutorial: windows7 system, javascript version 1.8.5, Dell G3 computer.
javascript string replacement characters
To replace all strings in js, you can use the following methods:
Two differences ：Regular&General
str.replace("需要替换的字符串"，"新字符串")
str.replace(/需要替换的字符串/g，"新字符串")Example 1:
"yyyy-MM-dd-hh-mm-ss".replace("-","/")The result is as follows:
"yyyy/MM-dd-hh-mm-ss"
Example 2:
"yyyy-MM-dd-hh-mm-ss".replace(/-/g,"/")
The result is as follows:
"yyyy/MM/dd/hh/mm/ss"
In summary:
Regular replacement will only replace the first matching character, regular replacement can replace all
Description: JavaScript replace() method
eplace() method is used to replace some characters with other characters in a string, or replace a substring that matches a regular expression.
Syntax
stringObject.replace(regexp/substr,replacement)
| Parameters | Description |
|---|---|
| regexp/substr |
Required. A RegExp object that specifies the substring or pattern to be replaced. Note that if the value is a string, it is retrieved as a literal text pattern, rather than first being converted to a RegExp object. |
| replacement | Required. A string value. Specifies functions for replacing text or generating replacement text. |
Return value
A new string obtained by replacing the first match or all matches of regexp with replacement.
[Related recommendations: javascript learning tutorial]
The above is the detailed content of How to replace characters in a javascript string. For more information, please follow other related articles on the PHP Chinese website!