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JavaScript

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HTML DOM

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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>

其他参考手册

CSSStyleDeclaration JS 类型转换


JavaScript RegExp m 修饰符


实例

在字符串中每一行的开头多行搜索 "is":

var str = "\nIs th\nis it?";
var patt1 = /^is/m;
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定义和用法

m 修饰符用于执行多行匹配。

m 修饰符处理开头 (^) 和结尾 ($) 字符,以匹配字符串每行的开头或结尾(由\n或\r分隔),而不仅仅是字符串的开头或结尾。

注释: m 修饰符区分大小写,在第一次匹配后将停止搜索。要执行全局、不区分大小写的多行搜索,请将此修饰符与 "g" 和 "i" 一起使用。

提示: 使用 multiline 属性指定是否设置了 m 修饰符。


浏览器支持

表达式
m Yes Yes Yes Yes Yes

语法

new RegExp("regexp", "m")

或者简写:

/regexp/m


技术细节

JavaScript 版本: ECMAScript 3

更多实例

实例

在字符串中每一行的开头进行全局多行搜索 "is":

var str = "\nIs th\nis h\nis?";
var patt1 = /^is/gm;
亲自试一试 »

实例

对字符串中每行开头的 "is" 进行全局、不区分大小写的多行搜索:

var str = "\nIs th\nis h\nis?";
var patt1 = /^is/gmi;
亲自试一试 »

实例

在字符串中的每一行末尾对 "is" 进行全局多行搜索:

var str = "Is\nthis\nhis\n?";
var patt1 = /is$/gm;
亲自试一试 »