HTML5 ??? ? ??
HTML5 ??? ? ??
??? ? ??
??? ? ??? ??? ?? ??? ?? ??? ????? ???? ?????.
HTML5??? ??? ? ??? ??? ???? ?? ??? ????? ? ??? ? ????.
?? ?:
<html xmlns="http://www.w3.org/1999/xhtml"><head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>html5 drag & drop 拖拽與拖放測試</title>
<style>
body{font-size:84%;}
.dustbin{width:100px; height:260px; line-height:1.4; background-color:gray; font-size:36px; font-family:"微軟雅黑", "Yahei Mono"; text-align:center; text-shadow:-1px -1px #bbb; float:left;}
.dragbox{width:500px; padding-left:20px; float:left;}
.draglist{padding:10px; margin-bottom:5px; border:2px dashed #ccc; background-color:#eee; cursor:move;}
.draglist:hover{border-color:#cad5eb; background-color:#f0f3f9;}
.dragremind{padding-top:2em; clear:both;}
</style>
</head>
<body>
<div class="dustbin"><br>垃<br>圾<br>箱</div>
<div class="dragbox">
<div class="draglist" title="拖拽我" draggable="true">列表1</div>
<div class="draglist" title="拖拽我" draggable="true">列表2</div>
<div class="draglist" title="拖拽我" draggable="true">列表3</div>
<div class="draglist" title="拖拽我" draggable="true">列表4</div>
<div class="draglist" title="拖拽我" draggable="true">列表5</div>
<div class="draglist" title="拖拽我" draggable="true">列表6</div>
</div>
<div class="dragremind"></div>
<script type="text/javascript" async="" src="http://www.google-analytics.com/ga.js"></script><script>
var $ = function(selector) {
if (!selector) { return []; }
var arrEle = [];
if (document.querySelectorAll) {
arrEle = document.querySelectorAll(selector);
} else {
var oAll = document.getElementsByTagName("div"), lAll = oAll.length;
if (lAll) {
var i = 0;
for (i; i<lAll; i+=1) {
if (/^\./.test(selector)) {
if (oAll[i].className === selector.replace(".", "")) {
arrEle.push(oAll[i]);
}
} else if(/^#/.test(selector)) {
if (oAll[i].id === selector.replace("#", "")) {
arrEle.push(oAll[i]);
}
}
}
}
}
return arrEle;
};
var eleDustbin = $(".dustbin")[0], eleDrags = $(".draglist"), lDrags = eleDrags.length, eleRemind = $(".dragremind")[0], eleDrag = null;
for (var i=0; i<lDrags; i+=1) {
eleDrags[i].onselectstart = function() {
return false;
};
eleDrags[i].ondragstart = function(ev) {
ev.dataTransfer.effectAllowed = "move";
ev.dataTransfer.setData("text", ev.target.innerHTML);
ev.dataTransfer.setDragImage(ev.target, 0, 0);
eleDrag = ev.target;
return true;
};
eleDrags[i].ondragend = function(ev) {
ev.dataTransfer.clearData("text");
eleDrag = null;
return false
};
}
eleDustbin.ondragover = function(ev) {
ev.preventDefault();
return true;
};
eleDustbin.ondragenter = function(ev) {
this.style.color = "#ffffff";
return true;
};
eleDustbin.ondrop = function(ev) {
if (eleDrag) {
eleRemind.innerHTML = '<strong>"' + eleDrag.innerHTML + '"</strong>被扔進了垃圾箱';
eleDrag.parentNode.removeChild(eleDrag);
}
this.style.color = "#000000";
return false;
};
</script>
<script type="text/javascript">
var _gaq = _gaq || [];
_gaq.push(['_setAccount', 'UA-11205167-1']);
_gaq.push(['_trackPageview']);
(function() {
var ga = document.createElement('script');
ga.type = 'text/javascript';
ga.async = true;
ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
})();
</script>
</body>
</html>??? ??? ???? ??
?? ??? ??? ???? ???? draggable ??? true? ?????.
<img draggable="true">
???? ?? - ondragstart ? setData()
?? ?? ??? ???? ? ?? ?? ????? ?????.
?? ??? ondragstart ??? ???? ???? ???? drag(event) ??? ?????.
dataTransfer.setData() ???? ???? ???? ??? ??? ?? ?????.
function drag(ev)
{
ev.dataTransfer.setData("Text",ev.target.id);
}? ??? ??? ??? "Text"?? ?? ??? ??? ???? ID???. ??("???1").
?? ?? - ondragover
ondragover ???? ???? ???? ??? ??? ?????.
????? ???/??? ?? ?? ?? ??? ? ????. ??? ???? ?? ?? ??? ?? ??? ???? ???.
ondragover ???? event.preventDefault() ???? ???? ?????.
event.preventDefault()
- ondrop
???? ???? ???? ?? ???? ?????.
? ??? ondrop ??? ?? drop(event)? ?????.
function drop(ev)
{
ev.preventDefault();
var data=ev.dataTransfer.getData("Text");
ev.target.appendChild(document.getElementById(data));
}?? ??:
preventDefault()? ???? ????? data ?? ??(?? ???? ?? ??? ??? ??? ??)
dataTransfer.getData("Text") ???? ?? ???? ???? ?????. ? ???? setData() ????? ??? ???? ??? ?? ???? ?????.
???? ???? ???? ??? ID("drag1")???
???? ??? ??? ??(?? ??)? ??
?? ?? ?? :
DataTransfer ??: ?? ??? ???? ? ???? ??, ????? Event.dataTransfer???.
draggable ??: ??? ??? draggable=true? ????? ???. ??? ??? ??? ??? ????. ?:
<div title="Drag me" draggable="true"> ; ?? 1</div>
ondragstart ???: ???? ??? ????? ??? ? ???? ??????. ? ???? ???? ??? ?????.
ondragenter ???: ???? ??? ?? ??? ??? ? ??? ??? ?? ???? ??? ? ???? ?????.
ondragover ???: ??? ??? ?? ???? ??? ? ???? ?????.
ondrop ???: ???? ??? ?? ??? ?? ??? ???? ?? ? ???? ??????. ? ???? ?? ??? ?????.
ondragend ???: ???? ??? ????. ???? ???? ??????. ? ???? ???? ??? ?????. ???
Event.preventDefault() ???? ?? ?? ??? ???? ??? ?????. PreventDefault()? ondragover?? ????? ???. ??? ??? ondrop ???? ????? ????. ??, ?? ???????? ??, ?? ???? ???? ????? ?? ?? ??? ???? ?? ??? ???? ??? ??? ??? ????? ????. ?? ??? ?? ????? ??? ondragover ???? ???? ???.
Event. effectAllowed ??: ??? ?????.
