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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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Other References

CSSStyleDeclaration JS Conversion


Elemento HTML DOM addEventListener()

Esempi

Aggiungi un evento click a un elemento <button>:

element.addEventListener("click", myFunction);

function myFunction() {
  document.getElementById("demo").innerHTML = "Hello World";
}

Codice più compatto:

element.addEventListener("click", function() {
  document.getElementById("demo").innerHTML = "Hello World";
});

Altri esempi di seguito.


Definizione e utilizzo

Il addEventListener()metodo allega un gestore di eventi all'elemento.


Sintassi

element.addEventListener(event, function, useCapture)

Parametri

Parameter Description
event Required.
The name of the event.
Do not use the "on" prefix. Use "click" not "onclick".

The Complete List of DOM Events.
function Required.
The function to run when the event occurs.
useCapture Optional (default = false).
false - The handler is executed in the bubbling phase.
true - The handler is executed in the capturing phase.

Valore di ritorno

NESSUNO


Altri esempi

Puoi aggiungere molti eventi allo stesso elemento:

element.addEventListener("click", myFunction1);
element.addEventListener("click", myFunction2);

Puoi aggiungere diversi eventi allo stesso elemento:

element.addEventListener("mouseover", myFunction);
element.addEventListener("click", someOtherFunction);
element.addEventListener("mouseout", someOtherFunction);

Per passare i valori dei parametri, utilizzare una "funzione anonima":

element.addEventListener("click", function() {
  myFunction(p1, p2);
});

Cambia il colore di sfondo di un elemento <button>:

element.addEventListener("click", function() {
  this.style.backgroundColor = "red";
});

La differenza tra gorgogliare e catturare:

element1.addEventListener("click", myFunction, false); element2.addEventListener("click", myFunction, true);

Rimuovere un gestore eventi:

element.addEventListener("mousemove", myFunction);
element.removeEventListener("mousemove", myFunction);

Supporto browser

element.addEventListener()è una funzionalità DOM di livello 2 (2001).

È completamente supportato in tutti i browser:

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