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JS 参考

按类别分类的 JS 按字母顺序排列的 JS

JavaScript

JS 数组 JS 布尔值 JS 类 JS 日期 JS 错误 JS 全局 JS JSON JS 地图 JS 数学 JS 数字 JS 对象 JS 运算符 JS 优先级 JS Promise JS 正则表达式 JS 集合 JS 语句 JS 字符串 JS TypedArray

窗口

窗口对象 窗口控制台 窗口历史记录 窗口位置 窗口导航器 窗口屏幕

HTML DOM

HTML 文档 HTML 元素 HTML 属性 HTML 集合 HTML 节点列表 HTML DOMTokenList HTML 样式
alignContent alignItems alignSelf animation animationDelay animationDirection animationDuration animationFillMode animationIterationCount animationName animationTimingFunction animationPlayState background backgroundAttachment backgroundClip backgroundColor backgroundImage backgroundOrigin backgroundPosition backgroundRepeat backgroundSize backfaceVisibility border borderBottom borderBottomColor borderBottomLeftRadius borderBottomRightRadius borderBottomStyle borderBottomWidth borderCollapse borderColor borderImage borderImageOutset borderImageRepeat borderImageSlice borderImageSource borderImageWidth borderLeft borderLeftColor borderLeftStyle borderLeftWidth borderRadius borderRight borderRightColor borderRightStyle borderRightWidth borderSpacing borderStyle borderTop borderTopColor borderTopLeftRadius borderTopRightRadius borderTopStyle borderTopWidth borderWidth bottom boxShadow boxSizing captionSide caretColor clear clip color columnCount columnFill columnGap columnRule columnRuleColor columnRuleStyle columnRuleWidth columns columnSpan columnWidth counterIncrement counterReset cssFloat cursor direction display emptyCells filter flex flexBasis flexDirection flexFlow flexGrow flexShrink flexWrap font fontFamily fontSize fontStyle fontVariant fontWeight fontSizeAdjust height isolation justifyContent left letterSpacing lineHeight listStyle listStyleImage listStylePosition listStyleType margin marginBottom marginLeft marginRight marginTop maxHeight maxWidth minHeight minWidth objectFit objectPosition opacity order orphans outline outlineColor outlineOffset outlineStyle outlineWidth overflow overflowX overflowY padding paddingBottom paddingLeft paddingRight paddingTop pageBreakAfter pageBreakBefore pageBreakInside perspective perspectiveOrigin position quotes resize right scrollBehavior tableLayout tabSize textAlign textAlignLast textDecoration textDecorationColor textDecorationLine textDecorationStyle textIndent textOverflow textShadow textTransform top transform transformOrigin transformStyle transition transitionProperty transitionDuration transitionTimingFunction transitionDelay unicodeBidi userSelect verticalAlign visibility width wordBreak wordSpacing wordWrap widows zIndex

HTML 事件

HTML 事件 HTML 事件对象 HTML 事件属性 HTML 事件方法

Web APIs

API 画布 API 控制台 API 获取 API 全屏 API 地理位置 API 历史记录 API 媒体查询列表 API 存储 API 验证 API 网页

HTML 对象

<a> <abbr> <address> <area> <article> <aside> <audio> <b> <base> <bdo> <blockquote> <body> <br> <button> <canvas> <caption> <cite> <code> <col> <colgroup> <datalist> <dd> <del> <details> <dfn> <dialog> <div> <dl> <dt> <em> <embed> <fieldset> <figcaption> <figure> <footer> <form> <head> <header> <h1> - <h6> <hr> <html> <i> <iframe> <img> <ins> <input> button <input> checkbox <input> color <input> date <input> datetime <input> datetime-local <input> email <input> file <input> hidden <input> image <input> month <input> number <input> password <input> radio <input> range <input> reset <input> search <input> submit <input> text <input> time <input> url <input> week <kbd> <label> <legend> <li> <link> <map> <mark> <menu> <menuitem> <meta> <meter> <nav> <object> <ol> <optgroup> <option> <output> <p> <param> <pre> <progress> <q> <s> <samp> <script> <section> <select> <small> <source> <span> <strong> <style> <sub> <summary> <sup> <table> <tbody> <td> <tfoot> <th> <thead> <tr> <textarea> <time> <title> <track> <u> <ul> <var> <video>

其他参考

CSSStyleDeclaration JS 转换


JavaScript 正则表达式分组 [abc]


示例

在字符串中全局搜索字符“h”

let text = "Is this all there is?";
let pattern = /[h]/g;
自己尝试 »

描述

方括号 [abc] 指定匹配方括号内的字符。

方括号可以定义单个字符、组或字符范围

[abc]a、b 或 c 中的任何字符
[A-Z]从大写 A 到大写 Z 的任何字符
[a-z]从小写 a 到小写 z 的任何字符
[A-z]从大写 A 到小写 z 的任何字符

浏览器支持

/[abc]/ 是 ECMAScript1 (ES1) 功能。

ES1 (JavaScript 1997) 在所有浏览器中都完全支持

Chrome Edge Firefox Safari Opera IE

语法

new RegExp("[abc]")

或者简化为

/[abc]/

带修饰符的语法

new RegExp("[abc]", "g")

或者简化为

/[abc]/g


提示

使用 [^abc] 表达式查找方括号之间以外的任何字符。

示例

在字符串中全局搜索字符“i”和“s”

let text = "Do you know if this is all there is?";
let pattern = /[is]/gi;
自己尝试 »

示例

在字符串中全局搜索从“a”到“h”的小写字母范围

let text = "Is this all there is?";
let pattern = /[a-h]/g;
自己尝试 »

示例

全局搜索从大写“A”到大写“E”的字符范围

let text = "I SCREAM FOR ICE CREAM!";
let pattern = /[A-E]/g;
自己尝试 »

示例

全局搜索从大写“A”到小写“e”的字符范围(将搜索所有大写字母,但仅搜索从 a 到 e 的小写字母)。

let text = "I Scream For Ice Cream, is that OK?!";
let pattern = /[A-e]/g;
自己尝试 »

示例

对字符范围 [a-s] 进行不区分大小写的全局搜索

let text = "I Scream For Ice Cream, is that OK?!";
let pattern = /[a-s]/gi;
自己尝试 »

示例

对字符进行“g”和“gi”搜索

let text = "THIS This this";
let result1 = text.match(/[THIS]/g);
let result2 = text.match(/[THIS]/gi);
自己尝试 »

正则表达式搜索方法

在 JavaScript 中,可以使用不同的方法进行正则表达式文本搜索。

使用pattern作为正则表达式,以下是最常用的方法

示例描述
text.match(pattern)String 方法 match()
text.search(pattern)String 方法 search()
pattern.exec(text)RexExp 方法 exec()
pattern.test(text)RegExp 方法 test()

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