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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 NEGATIVE_INFINITY 属性


实例

返回负无穷大:

Number.NEGATIVE_INFINITY;
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页面下方有更多实例。


定义和用法

NEGATIVE_INFINITY 属性表示负无穷大。

负无穷可以解释为比任何其他数字都低的东西。


始终使用 Number.NEGATIVE_INFINITY

NEGATIVE_INFINITY 是 JavaScript Number 对象的静态属性。

您只能将其用作 Number.NEGATIVE_INFINITY.

使用 x.NEGATIVE_INFINITY,其中x是数字或数字对象,将返回 undefined:

实例

var x = 100;
x.NEGATIVE_INFINITY;

x 的值为:

undefined
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浏览器支持

属性
NEGATIVE_INFINITY Yes Yes Yes Yes Yes

语法

Number.NEGATIVE_INFINITY;


技术细节

返回值: 数值: -Infinity
JavaScript 版本: ECMAScript 1

更多实例

实例

创造一个负无穷大:

var n = (-Number.MAX_VALUE) * 2;
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