简体中文(ZH-CN) English(EN) 繁体中文(ZH-TW) 日本語(JA) 한국어(KO) Melayu(MS) Français(FR) Deutsch(DE)
Home > Web Front-end > JS Tutorial > body text

Usage of replace() assignment in js

一个新手
Release： 2017-09-11 09:13:45
Original
1561 people have browsed it

<script>var str = "a1ba2b";var reg = /a.b/g;
str = str.replace(reg,function(a,b){
    console.log(a);
    console.log(b);    return b == 0 ? a.replace("a","0") : a.replace("b","3");
});
console.log(str);/*
输出结果为：
a1b
0//第一次匹配到a1b，将a置为0.
a2b
3//第二次匹配到a2b，将b置为3.
01ba23//返回经过修改后的字符串
*//*
function（a,b,c）一共可以传入3个参数，第一个为匹配的字符串，第二个为匹配字符串的起始位置，
第三个为调用replace方法的字符串本身。可以缺省c或b、c。
*/</script>
Copy after login

The above is the detailed content of Usage of replace() assignment in js. For more information, please follow other related articles on the PHP Chinese website!

Related labels：
javascript replace Assignment
source：php.cn
Previous article：Let’s talk about tree component element ui Next article：How to write an instructional video player
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Latest Articles by Author
Latest Issues
CSS only method to dynamically modify image src on click without using JavaScript I need to change the src of an image on mouse click using only css like img:active{}
From 2024-04-06 19:25:49
0
1
505
Scatterplot points do not maintain values ​​when zooming in d3.js This is my first time using d3.js, so please bear with me. I implemented it as pure JavaSc...
From 2024-04-06 18:16:26
0
1
403
JavaScript hover events on vendor-specific pseudo-elements I have the following htmlinput tag. $("input[type='range']::-webkit-slider-thumb"...
From 2024-04-06 15:35:24
0
1
274
Submit form without button using Javascript/Jquery I'm trying to submit a form without a button by calling a JavaScript function and executin...
From 2024-04-06 14:54:03
0
2
421
Customize the appearance of Bootstrap accordion headers using the CollapseDisplay class I want to style the card title of a panel with class collapseshow. In this example, it's t...
From 2024-04-06 12:53:11
0
1
376
Related Topics
More>
Popular Recommendations
Popular Tutorials
More>
Related Tutorials
Popular Recommendations
Latest courses
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template
About us Disclaimer Sitemap
php.cn：Public welfare online PHP training，Help PHP learners grow quickly！