Javascript 使用jquery拖放图像
我正在尝试使用拖放创建一个照片编辑器。问题是,当我尝试在html的div中拖放图像时,它会重新加载一个新页面,而不是在div中设置图像。我想将图像放在灰色方框中Javascript 使用jquery拖放图像,javascript,jquery,Javascript,Jquery,我正在尝试使用拖放创建一个照片编辑器。问题是,当我尝试在html的div中拖放图像时,它会重新加载一个新页面,而不是在div中设置图像。我想将图像放在灰色方框中 $.event.props.push(“数据传输”); $(函数(){ 功能设计(img){ var cW=img.宽度,cH=img.高度; $(“#编辑”) .attr({宽度:cW,高度:cH}); var context=$(“#编辑器”)[0].getContext(“2d”); drawImage(img,0,0);
$.event.props.push(“数据传输”);
$(函数(){
功能设计(img){
var cW=img.宽度,cH=img.高度;
$(“#编辑”)
.attr({宽度:cW,高度:cH});
var context=$(“#编辑器”)[0].getContext(“2d”);
drawImage(img,0,0);
var id=context.getImageData(0,0,cW,cH);
var v=[];
对于(变量i=0;i<256;i++){
v、 推(0);
}
对于(变量y=0;y0){
var reader=new FileReader();
reader.onload=函数(e){
desenare($(“#编辑”)
.attr(“src”,e.target.result)[0];
};
reader.readAsDataURL(文件[0]);
}
});
});
请检查jQuery UI的以下代码和源代码链接
可拖动的:
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>jQuery UI Draggable - Default functionality</title>
<link rel="stylesheet" href="//code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">
<link rel="stylesheet" href="/resources/demos/style.css">
<style>
#draggable { width: 150px; height: 150px; padding: 0.5em; }
</style>
<script src="https://code.jquery.com/jquery-1.12.4.js"></script>
<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
<script>
$( function() {
$( "#draggable" ).draggable();
} );
</script>
</head>
<body>
<div id="draggable" class="ui-widget-content">
<p>Drag me around</p>
</div>
</body>
</html>
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>jQuery UI Droppable - Default functionality</title>
<link rel="stylesheet" href="//code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">
<link rel="stylesheet" href="/resources/demos/style.css">
<style>
#draggable { width: 100px; height: 100px; padding: 0.5em; float: left; margin: 10px 10px 10px 0; }
#droppable { width: 150px; height: 150px; padding: 0.5em; float: left; margin: 10px; }
</style>
<script src="https://code.jquery.com/jquery-1.12.4.js"></script>
<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
<script>
$( function() {
$( "#draggable" ).draggable();
$( "#droppable" ).droppable({
drop: function( event, ui ) {
$( this )
.addClass( "ui-state-highlight" )
.find( "p" )
.html( "Dropped!" );
}
});
} );
</script>
</head>
<body>
<div id="draggable" class="ui-widget-content">
<p>Drag me to my target</p>
</div>
<div id="droppable" class="ui-widget-header">
<p>Drop here</p>
</div>
</body>
</html>
jQuery UI可拖动-默认功能
#可拖动{宽度:150px;高度:150px;填充:0.5em;}
$(函数(){
$(“#可拖动”).draggable();
} );
把我拖来拖去
可拖放的:
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>jQuery UI Draggable - Default functionality</title>
<link rel="stylesheet" href="//code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">
<link rel="stylesheet" href="/resources/demos/style.css">
<style>
#draggable { width: 150px; height: 150px; padding: 0.5em; }
</style>
<script src="https://code.jquery.com/jquery-1.12.4.js"></script>
<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
<script>
$( function() {
$( "#draggable" ).draggable();
} );
</script>
</head>
<body>
<div id="draggable" class="ui-widget-content">
<p>Drag me around</p>
</div>
</body>
</html>
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>jQuery UI Droppable - Default functionality</title>
<link rel="stylesheet" href="//code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">
<link rel="stylesheet" href="/resources/demos/style.css">
<style>
#draggable { width: 100px; height: 100px; padding: 0.5em; float: left; margin: 10px 10px 10px 0; }
#droppable { width: 150px; height: 150px; padding: 0.5em; float: left; margin: 10px; }
</style>
<script src="https://code.jquery.com/jquery-1.12.4.js"></script>
<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
<script>
$( function() {
$( "#draggable" ).draggable();
$( "#droppable" ).droppable({
drop: function( event, ui ) {
$( this )
.addClass( "ui-state-highlight" )
.find( "p" )
.html( "Dropped!" );
}
});
} );
</script>
</head>
<body>
<div id="draggable" class="ui-widget-content">
<p>Drag me to my target</p>
</div>
<div id="droppable" class="ui-widget-header">
<p>Drop here</p>
</div>
</body>
</html>
jQuery UI可拖放-默认功能
#可拖动{宽度:100px;高度:100px;填充:0.5em;浮动:左侧;边距:10px 10px 10px 0;}
#可拖放{宽度:150px;高度:150px;填充:0.5em;浮动:左侧;边距:10px;}
$(函数(){
$(“#可拖动”).draggable();
$(“#可拖放”)。可拖放({
drop:函数(事件、用户界面){
$(本)
.addClass(“ui状态突出显示”)
.查找(“p”)
.html(“已删除!”);
}
});
} );
把我拖到我的目标
到这里来
源代码:e=事件使用e.stopPropagation();