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This time I will bring you jquery to implement the div drag effect function (with code). What are the precautions for jquery to implement the div drag effect function. The following is a practical case, let's take a look.
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>无标题文档</title> <style> #Drigging { width:200px; background:#CCC; border:solid 1px #666; height:80px; line-height:80px; text-align:center; position:absolute; } </style> <script src="jquery-1.8.2.min.js" type="text/javascript"></script> <script type="text/javascript"> $(function(){ var bool=false; //标识是否移动元素 var offsetX=0; //声明p在当前窗口的Left值 var offsetY=0; //声明p在当前窗口的Top值 $("#Drigging").mouseover(function(){ $(this).css('cursor','move'); //当鼠标移动到拖拽的p上的时候,将鼠标的样式设置为移动(move) }) $("#Drigging").mousedown(function(){ bool=true; //当鼠标在移动元素按下的时候将bool设定为true offsetX = event.offsetX; //获取鼠标在当前窗口的相对偏移位置的Left值并赋值给offsetX offsetY = event.offsetY; //获取鼠在当前窗口的相对偏移位置的Top值并赋值给offsetY $(this).css('cursor','move'); }).mouseup(function(){ bool=false; //当鼠标在移动元素起来的时候将bool设定为false }) $(document).mousemove(function(){ if(!bool)//如果bool为false则返回 return; //当bool为true的时候执行下面的代码 var x = event.clientX-offsetX; //event.clientX得到鼠标相对于客户端正文区域的偏移 //然后减去offsetX即得到当前推拽元素相对于当前窗口的X值 //(减去鼠标刚开始拖动的时候在当前窗口的偏移X) var y = event.clientY-offsetY; //event.clientY得到鼠标相对于客户端正文区域的偏移 //然后减去offsetX即得到当前推拽元素相对于当前窗口的Y值 //(减去鼠标刚开始拖动的时候在当前窗口的偏移Y) $("#Drigging").css("left", x); $("#Drigging").css("top", y); $("#Drigging").css('cursor','move'); }) }) </script> </head> <body> <p id="Drigging" style="float:left"> 拖拽层 </p> </body> </html>
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