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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 类型化数组

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 API

API Canvas API Console API Fetch 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 Web

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 RegExp g 修饰符

示例

在文本中全局搜索 "is"

let pattern = /is/g;
let result = text.match(pattern);
试试看 »

描述

"g" 修饰符指定全局匹配。

全局匹配会找到所有匹配项(不仅仅是第一个)。

浏览器支持

/regexp/g 是 ECMAScript1 (ES1) 的特性。

ES1 (JavaScript 1997) 在所有浏览器中都得到完全支持

Chrome Edge Firefox Safari Opera IE

语法

new RegExp("regexp", "g")

或者简写为

/regexp/g

更多示例

使用 RegExp 函数 exec()

let text = "Is this all there is?";

let pattern = /is/g;
let result = pattern.exec(text);
试试看 »

使用 RegExp 函数 test()

let pattern = /is/g;
let result = pattern.test(text);
试试看 »

使用 String 函数 match()

let pattern = /is/g;
let result = text.match(pattern);
试试看 »


提示

对于全局、不区分大小写的搜索,请将 "i" 修饰符 与 g 修饰符一起使用。

全局、不区分大小写的搜索 "is"

使用 RegExp 函数 exec()

let text = "Is this all there is?";
let result = /is/gi.exec(text);
试试看 »

使用 RegExp 函数 test()

let text = "Is this all there is?";
let result = /is/gi.test(text);
试试看 »

使用 String 函数 match()

let text = "Is this all there is?";
let result = text.match(/is/gi);
试试看 »

提示

可以使用 global 属性 检查 g 修饰符是否设置。

示例

let pattern = /W3S/g;
let result = pattern.global;
试试看 »

正则表达式搜索方法

在 JavaScript 中,可以使用不同的方法执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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