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Multi-directional Drag to change element size

Source: Internet
Author: User
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Drag and drop:
1 onmousedown Storage Distance disx/y
2 onmousemove Modify left Top
3 OnMouseUp Release Resources

1<! DOCTYPE html>234<meta charset= "UTF-8" >5<title></title>6<style>7 #box {8 width:100px;9 height:100px;Tenbackground-color:red; One Position:absolute; A left:200px; - top:200px; -         } the  -</style> -<script> -Window.onload=function(){ +             varObox=document.getelementbyid (' box '); -  +obox.onmousedown=function(e) { Ae=e| |event; at                 var -Pos=fn.call ( This), -disy=E.clienty, -disx=E.clientx, -Disl= This. Offsetleft, -dist= This. OffsetTop, inw=Obox.offsetwidth, -H=Obox.offsetheight; to  +  -Document.onmousemove=function(e) { thee=e| |event; *  $                     varx= e.clientx-Disx,Panax Notoginsengy= e.clienty-Disy; -  the  +  A                     if(Inarr (POS, ' top ')!=-1){ the                         if(h-y>=50){ +obox.style.height=h-y+ ' px '; -obox.style.top=dist+y+ ' px '; $                         } $  -                     } -                     if(Inarr (POS, ' bottom ')!=-1){ the                         if(Y + h>=50) { -OBox.style.height = y + H + ' px ';Wuyi                         } the                     } -                     if(Inarr (POS, ' left ')!=-1){ Wu                         if(w-x>=50){ -obox.style.width=w-x+ ' px '; Aboutobox.style.left=disl+x+ ' px '; $                         } -  -                     } -  A                     if(Inarr (POS, ' right ')!=-1){ +                         if(x+w>=50){ theobox.style.width=x+w+ ' px '; -                         } $  the                     } the                 } thedocument.onmouseup=function(){ thedocument.onmousemove=document.onouseup=NULL; -                 } in             } the  the  AboutObox.onmousemove=fn; the            functionfn (e) { thee=e| |event; the  +                 var -disx=E.clientx, thedisy=E.clienty,Bayiw= This. offsetwidth, theH= This. offsetheight, theDisl= This. Offsetleft, -dist= This. OffsetTop, -pos=[]; the                  This. style.cursor= '; the                 if(disx<disl+10){ thePos.push (' left '); the                      This. style.cursor = ' w-resize '; -                 } the                 if(disx>disl+w-10){ thePos.push (' right '); the                      This. style.cursor = ' w-resize ';94                 } the                 if(disy<dist+10){ thePos.push (' Top '); the                      This. style.cursor = ' n-resize ';98                 } About                 if(disy>dist+h-10){ -Pos.push (' Bottom ');101                      This. style.cursor = ' n-resize ';102                 }103 104                 if(pos.length==2){ the                     if(Inarr (POS, ' top ')!=-1&&inarr (POS, ' right ')!=-1) | | (Inarr (POS, ' left ')!=-1&&inarr (pos, ' bottom ')!=-1)){106                          This. style.cursor= ' Ne-resize ';107}Else{108                          This. style.cursor= ' Nw-resize ';109                     } the 111                 } the                 returnPos;113             } the  the             functionInarr (arr,s) { the 117                  for(vari=0;i<arr.length;i++){118                     if(arr[i]==s) {119                         returni; -                     }121                 }122                 return-1;123             }124         } the</script>126127<body> - 129<div id= "box" ></div> the</body>131
Multi-directional Drag to change element size

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