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GlobalEventHandlers.ondragover

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Syntax
1. Return value
Example
Specifications
Browser compatibility
See also

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A global event handler for the dragover event.

Syntax

var dragoverHandler = targetElement.ondragover;

Return value

dragoverHandler: The dragover event handler for element targetElement.

Example

This example demonstrates using the ondragover attribute handler to set an element's dragover event handler.

<!DOCTYPE html>
<html lang=en>
<title>Examples of using the ondrag Global Event Attribute</title>
<meta content="width=device-width">
<style>
  div {
    margin: 0em;
    padding: 2em;
  }
  #source {
    color: blue;
    border: 1px solid black;
  }
  #target {
    border: 1px solid black;
  }
</style>
</head>
<script>
function drag_handler(ev) {
 console.log("Drag");
}

function dragstart_handler(ev) {
 console.log("dragStart");
 ev.dataTransfer.setData("text", ev.target.id);
}

function drop_handler(ev) {
 console.log("Drop");
 ev.currentTarget.style.background = "lightyellow";

 ev.preventDefault();
 var data = ev.dataTransfer.getData("text");
 ev.target.appendChild(document.getElementById(data));
}

function dragover_handler(ev) {
 console.log("dragOver");
 ev.preventDefault();
}
</script>
<body>
<h1>Examples of <code>ondrag</code>, <code>ondrop</code>, <code>ondragstart</code>, <code>ondragover</code></h1>
 <div>
   <p id="source" ondrag="drag_handler(event);" ondragstart="dragstart_handler(event);" draggable="true">
     Select this element, drag it to the Drop Zone and then release the selection to move the element.</p>
 </div>
 <div id="target" ondrop="drop_handler(event);" ondragover="dragover_handler(event);">Drop Zone</div>
</body>
</html>

Specifications

Specification	Status	Comment
WHATWG HTML Living Standard The definition of 'ondragover' in that specification.	Living Standard
HTML5.1 The definition of 'ondragover' in that specification.	Working Draft	Initial definition

Feature	Chrome	Firefox (Gecko)	Internet Explorer	Opera	Safari (WebKit)
Basic support	4	3.5 (1.9.1)	10	12	3.1

Feature	Android	Android Webview	Chrome for Android	Firefox Mobile (Gecko)	Firefox OS	IE Mobile	Opera Mobile	Safari Mobile
Basic support	Not supported	Not supported	Not supported	Not supported	Not supported	10	Not supported	Not supported

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このページの貢献者: Sebastianz, AFBarstow, Sheppy

最終更新者: Sebastianz, 2015/12/19 16:18:21