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HTML DOM

DOM Document DOM Element DOM Attributes DOM Events DOM Event Objects DOM HTMLCollection DOM Style
alignContent alignItems alignSelf animation animationDelay animationDirection animationDuration animationFillMode animationIterationCount animationName animationTimingFunction animationPlayState background backgroundAttachment backgroundColor backgroundImage backgroundPosition backgroundRepeat backgroundClip backgroundOrigin 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 cursor direction display emptyCells filter flex flexBasis flexDirection flexFlow flexGrow flexShrink flexWrap cssFloat 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

Web APIs

API Console API Fullscreen API Geolocation API History API MediaQueryList API Storage

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> <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>

Other References

CSSStyleDeclaration JS Conversion


HTML DOM-dokument getElementsByClassName()

Voorbeeld

Kry alle elemente met class="example":

const collection = document.getElementsByClassName("example");

Kry alle elemente met beide die "voorbeeld" en "kleur" klasse:

const collection = document.getElementsByClassName("example color");

Meer voorbeelde hieronder.


Definisie en gebruik

Die getElementsByClassName()metode gee 'n versameling elemente met 'n gespesifiseerde klasnaam(e) terug.

Die getElementsByClassName()metode gee 'n HTMLCollection terug .

Die getElementsByClassName()eiendom is leesalleen.


HTML-versameling

'n HTMLCollection is 'n versameling HTML-nodusse.

Nodusse in 'n versameling kan verkry word deur indeksnommers. Die indeks begin by 0.

Die lengte Eiendom gee die aantal elemente in die versameling terug.



Sintaksis

document.getElementsByClassName(classname)

Grense

Parameter Description
classname Required.
The class name of the elements.
Search for multiple class names separated by spaces like "test demo".

Terugkeerwaarde

Tik Beskrywing
Voorwerp.'n HTMLCollection- voorwerp.
'n Versameling elemente met die gespesifiseerde klasnaam.
Die elemente word gesorteer soos dit in die dokument verskyn.


Meer voorbeelde

Aantal elemente met class="example":

let numb = document.getElementsByClassName("example").length;

Verander die agtergrondkleur van alle elemente met class="example":

const collection = document.getElementsByClassName("example");
for (let i = 0; i < collection.length; i++) {
  collection[i].style.backgroundColor = "red";
}

Verwante bladsye

CSS-tutoriaal: CSS-sintaksis

CSS-verwysing: CSS .class Selector

HTML DOM-verwysing: element .getElementsByClassName()

HTML DOM Verwysing: klasnaam Eiendom

HTML DOM-verwysing: classList Property

HTML DOM-verwysing: Stylvoorwerp


Blaaierondersteuning

document.getElementsByClassName() is 'n DOM Vlak 1 (1998) kenmerk.

Dit word ten volle ondersteun in alle blaaiers:

Chrome IE Edge Firefox Safari Opera
Yes 9-11 Yes Yes Yes Yes