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JavaScript & HTML DOM Reference Manual

Overview

JavaScript Object

JavaScript Array Object JavaScript Boolean Object JavaScript Date Object JavaScript Math Object JavaScript Number Object JavaScript String Object JavaScript RegExp Object JavaScript Global properties / functions JavaScript Operator

Browser Object

Window Object Navigator Object Screen Object History Object Location Object

DOM Object

HTML DOM Document Object HTML DOM Element object HTML DOM Attribute object HTML DOM Event object

HTML Object

<a> <area> <audio> <base> <blockquote> <body> <button> <canvas> <col> <colgroup> <datalist> <del> <details> <dialog> <embed> <fieldset> <form> <iframe> <frameset > <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> - range <input> - password <input> - radio <input> - reset <input> - search <input> - submit <input> - text <input> - time <input> - url <input> - week <keygen> <link> <label> <legend> <li> <map> <menu> <menuItem> <meta> <meter> <object> <ol> <optgroup> <option> <param> <progress> <q> <script> <select> <source> <style> <table> <td> <th> <tr> <textarea> <title> <time> <track> <video>

RegExp?! Quantifier

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RegExp Object Reference

JavaSript RegExp objects

Definition and Usage

The?!N quantifier not immediately followed by any string matches the specified stringn.

grammar

new RegExp("regexp(?!n)")

或者

/regexp(?!n)/

Browser Support

All major browsers support?! Quantifiers.

Examples

Examples

Not keeping up with "all" the "is" a global search for them later:

var str="Is this all there is";
var patt1=/is(?! all)/gi;

The marked text below shows where the expression gets a match:

Is this all there is

RegExp Object Reference

JavaSript RegExp objects

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