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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

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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


HTML DOM要素addEventListener()

クリックイベントを<button>要素に追加します。

element.addEventListener("click", myFunction);

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

よりコンパクトなコード:

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

以下のその他の例。


定義と使用法

このaddEventListener()メソッドは、イベントハンドラーを要素にアタッチします。


構文

element.addEventListener(event, function, useCapture)

パラメーター

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.

戻り値

なし


その他の例

同じ要素に多くのイベントを追加できます。

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

同じ要素に異なるイベントを追加できます。

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

パラメータ値を渡すには、「無名関数」を使用します。

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

<button>要素の背景色を変更します。

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

バブリングとキャプチャの違い:

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

イベントハンドラーを削除します。

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

ブラウザのサポート

element.addEventListener() DOMレベル2(2001)の機能です。

すべてのブラウザで完全にサポートされています。

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