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How to make replace replace all in javascript
- WBOYOriginal
- 2022-01-19 16:41:5917697browse
In JavaScript, you can use "/g" in the regular expression to make replace replace all. "/g" in the regular expression means to match all. The syntax is "replacement object.replace( /Character to be replaced/g,"Replaced character ")".
The operating environment of this tutorial: Windows 10 system, JavaScript version 1.8.5, Dell G3 computer.
javascriptHow to make replace replace all
Thereplace() method is used to replace some characters with other characters in a string, or replace A substring that matches the regular expression.
Syntax
stringObject.replace(regexp/substr,replacement)
Parameter Description
regexp/substrRequired. 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.
Example:
var str = "atetateg".replace("a",""); will only replace the first a
var str = "atetateg ".replace(/a/g,""); will replace all /g represents matching the full text
In fact, we use regular expressions in JS, /\LOVE/g /\LOVE means to Find the string. What we are looking for are quotation marks. /g is the syntax of regular expressions, which means all the meaning. Here it means replacing all.
The example is as follows:
<html> <body> <script type="text/javascript"> var str="好好学习，田田向上。" document.write(str.replace(/田/g,"天")) var str="好好学习，田田向上。" document.write(str.replace(/田/,"天")) </script> </body> </html>
Output result:
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