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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

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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


Lista de clases de elementos HTML DOM

❮ Objeto Elemento

Ejemplo

Agregue una clase "myStyle" a un elemento:

element.classList.add("myStyle");

Elimina la clase "myStyle" de un elemento:

element.classList.remove("myStyle");

Alternar entre dos clases para un elemento:

element.classList.toggle("newStyle");

Más ejemplos a continuación.


Definición y uso

La classListpropiedad devuelve los nombres de clase CSS de un elemento.

La classListpropiedad devuelve un objeto DOMTokenList.

La classListpropiedad es de solo lectura, pero puede usar los métodos add() y remove() para agregar o eliminar clases CSS.

Nota

La classListpropiedad es útil para agregar, eliminar y alternar clases CSS en un elemento.

Ver también:

La propiedad className del elemento

El método getElementsByClassName() del documento

El objeto de estilo HTML DOM


Sintaxis

element.classList

Valores de propiedad

Value Description
length The number of classes in the list.
This property is read-only.

Métodos

Method Description
add(class1,
class2, ...
)
Adds one or more classes.
contains(class) Returns true if an element has the class, otherwise false.
item(index) Returns the class name with a specified index.
Index starts at 0.
Returns null if the index is out of range.
remove(class1, class2, ...) Removes one or more classes from an element.

Removing a class that does not exist, does NOT throw an error.
toggle(class, true|false) Toggles between a class for an element.

It removes the class and returns false.
If the class does not exist, it adds the class and returns true.

The optional second parameter is a boolean that forces the class to be added or removed, regardless of whether or not it already exists.

The second parameter is not supported in Internet Explorer 11 or earlier.

Valor devuelto

Type Description
ObjectA DOMTokenList.
A list of the class names of an element.


Más ejemplos

Agregue múltiples clases a un elemento:

element.classList.add("myStyle", "anotherClass", "thirdClass");

Eliminar varias clases de un elemento:

element.classList.remove("myStyle", "anotherClass", "thirdClass");

Cuántos nombres de clase tiene el elemento:

let numb = element.classList.length;

Obtenga los nombres de clase del elemento "myDIV":

<div id="myDIV" class="myStyle anotherClass thirdClass">
<p>I am myDIV.</p>
</div>

const list = document.getElementById("myDIV").classList;

Obtener la primera clase de un elemento:

let className = element.classList.item(0);

¿Un elemento tiene una clase "myStyle"?

let x = element.classList.contains("myStyle");

Elimina "anotherClass" si un elemento tiene una clase "myStyle".

if (element.classList.contains("mystyle")) {
  element.classList.remove("anotherClass");
}

Alterne entre clases para crear un botón desplegable:

document.getElementById("myBtn").onclick = function() {myFunction()};

function myFunction() {
  document.getElementById("myDropdown").classList.toggle("show");
}

Cree una barra de navegación pegajosa:

// Get the navbar
var navbar = document.getElementById("navbar");

// Get the offset position of the navbar
var sticky = navbar.offsetTop;

// Add the sticky class to the navbar when you reach its scroll position. Remove the sticky class when you leave the scroll position.
function myFunction() {
  if (window.pageYOffset  >= sticky) {
    navbar.classList.add("sticky")
  } else {
    navbar.classList.remove("sticky");
  }
}

páginas relacionadas

Tutorial CSS: Sintaxis CSS

Referencia CSS: CSS .class Selector


Compatibilidad con navegador

element.classList es compatible con todos los navegadores:

Chrome IE Edge Firefox Safari Opera
Yes 10-11 Yes Yes Yes Yes

❮ El Objeto Elemento