GlobalEventHandlers.ondragstart
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
global event handler
для события dragstart
.
Синтаксис
var dragstartHandler = targetElement.ondragstart;
Возвращаемое значение
dragstartHandler
-
Обработчик событий dragstart для элемента
targetElement
.
Пример
Этот пример демонстрирует использование атрибута ondragstart
для установки обработчика событий dragstart
.
js
<!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>
Спецификации
Specification |
---|
HTML Standard # ix-handler-ondragstart |
HTML Standard # event-dnd-dragstart |
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