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How to make replace replace all in javascript

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Release： 2022-01-19 16:41:59

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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 ")".

How to make replace replace all in javascript

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)

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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>

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Output result:

How to make replace replace all in javascript

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