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JavaScript Reference

JavaScript

JS String JS Number JS Operators JS Statements JS Math JS Date JS Array JS Boolean JS RegExp JS Global JS Conversion

Browser BOM

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HTML DOM

DOM Document DOM Elements DOM Attributes DOM Events DOM Style

HTML Objects

<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> <keygen> <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> <td> <th> <tr> <textarea> <time> <title> <track> <u> <ul> <var> <video>

Other Objects

CSSStyleDeclaration

HTML DOM specified Property

Attributes Object Reference Attribute Object

Example

Find out if an attribute has been specified or not:

var x = document.getElementById("demo").attributes[0].specified;

The result of x will be:

true

Try it Yourself »

Definition and Usage

The specified property returns true if the attribute is specified.

Returns true also if the attribute has been created but not been attached to an element yet.

Otherwise it returns false.

Browser Support

Property
specified	Yes	Yes	Yes	Yes	Yes

Syntax

attribute.specified

Technical Details

Return Value:	A Boolean, returns true if the attribute is specified, otherwise false
DOM Version	Core Level 1

Attributes Object Reference Attribute Object

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