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JS 参考手册

JS 参考手册(字母排序)

JavaScript

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Window

Window Object Window Console Window History Window Location Window Navigator Window Screen

HTML DOM

HTML Documents HTML Elements HTML Attributes HTML Collection HTML NodeList HTML DOMTokenList HTML Styles
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 Events

HTML Events HTML Event Objects HTML Event Properties HTML Event Methods

Web APIs

API Canvas API Console API Fetch API Fullscreen API Geolocation API History API MediaQueryList API Storage API Validation 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> <sub> <summary> <sup> <table> <tbody> <td> <tfoot> <th> <thead> <tr> <textarea> <time> <title> <track> <u> <ul> <var> <video>

Meta httpEquiv 属性


实例

返回内容属性中信息的 HTTP 标头:

var x = document.getElementsByTagName("META")[0].httpEquiv;
亲自试一试 »

定义和用法

httpEquiv 属性设置或返回内容属性中信息的 HTTP 标头。

http-equiv 属性可用于模拟 HTTP 响应标头。

http-equiv 属性的值取决于 content 属性的值。

注释:如果设置了 name 属性,则不应设置 http-equiv 属性。


浏览器支持

属性
httpEquiv Yes Yes Yes Yes Yes

语法

返回 httpEquiv 属性:

metaObject.httpEquiv

设置 httpEquiv 属性:

metaObject.httpEquiv = HTTP-header

Some commonly used HTTP-header values are:

描述
content-type 指定文档内容的字符集。

提示:建议始终指定字符集。

示例:

<meta http-equiv="content-type" content="text/html; charset=UTF-8">

default-style 指定要使用的首选样式表。

示例:

<meta http-equiv="default-style" content="文档首选样式表">

注释: 上述内容属性的值必须与同一文档中链接元素上的 ttitle 属性值匹配,或者它必须与样式元素上的标题属性值匹配 在同一个文档中。

refresh 定义文档自我刷新的时间间隔。

例子:

<meta http-equiv="refresh" content="300">

注释: 值 "refresh" 应谨慎使用,因为它会将页面的控制权从用户手中夺走。

返回值

类型 描述
String HTTP响应消息头信息

更多实例

实例

更改 http-equiv 和 content 属性的值。 以下示例将每 30 秒刷新一次文档:

 document.getElementsByTagName("META")[0].httpEquiv = "refresh";
 document.getElementsByTagName("META")[0].content = "30";
亲自试一试 »

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