原生JS，实现图片可拖拽，并且移动四个角和四条变能够自由变换图片大小
已写一部分求大神帮助补充完感激不尽<style>*{margin:0;padding:0}.box{width:200px;height:200px;position:a...
已写一部分 求大神帮助补充完 感激不尽<style>*{margin:0;padding:0}.box{width:200px;height:200px; position:absolute;top:100px;left:100px;}/*四边*/.box .t{width:100%;height:10px; position:absolute;top:0;left:0; background:#666;z-index:1;cursor: row-resize;}/*四角*/.box .tl{width:20px;height:20px;position:absolute;top:-5px;left:-5px; background:#CCC;z-index:2;cursor:nwse-resize}/*图片*/img{ width:100%; height:100%;}</style><script>window.onload=function(){ var oDiv=document.getElementsByTagName('div')[0]; var aSpan=oDiv.getElementsByTagName('span'); for(var i=0;i<aSpan.length;i++){ dragFn(aSpan[i]); }; function dragFn(obj){ obj.onmousedown=function(ev){ var oEv=ev||event; var oldWidth=oDiv.offsetWidth; var oldHeight=oDiv.offsetHeight; var oldX=oEv.clientX; var oldY=oEv.clientY; var oldLeft=oDiv.offsetLeft; var oldTop=oDiv.offsetTop; document.onmousemove=function(ev){ var oEv=ev||event; //tl if(obj.className=='tl'){ oDiv.style.width=oldWidth-(oEv.clientX-oldX)+'px'; oDiv.style.left=oldLeft+(oEv.clientX-oldX)+'px'; oDiv.style.height=oldHeight-(oEv.clientY-oldY)+'px'; oDiv.style.top=oldTop+(oEv.clientY-oldY)+'px'; }; }; document.onmouseup=function(){ document.onmousemove=null; }; return false; }; }; };</script></head><body><div class="box"> <span class="r"></span> <span class="l"></span> <span class="t"></span> <span class="b"></span> <span class="br"></span> <span class="bl"></span> <span class="tr"></span> <span class="tl"></span> <img src="02.jpg"></div></body>
求大神百忙之中抽空帮助。。。 展开
求大神百忙之中抽空帮助。。。 展开
1个回答
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见证奇迹的时刻到了：
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<style>
* {
margin: 0;
padding: 0
}
.box {
position: absolute;
top: 100px;
left: 100px;
}
/*四边*/
.box .t,
.box .b,
.box .l,
.box .r {
position: absolute;
z-index: 1;
background:#666;
}
.box .l,
.box .r {
width: 10px;
height: 100%;
cursor: col-resize;
}
.box .t,
.box .b {
width: 100%;
height: 10px;
cursor: row-resize;
}
.box .t {
top: 0;
}
.box .b {
bottom: 0;
}
.box .l {
left: 0;
}
.box .r {
right: 0;
}
/*四角*/
.box .tl,
.box .bl,
.box .br,
.box .tr {
width: 20px;
height: 20px;
position: absolute;
background: #CCC;
z-index: 2;
cursor: nwse-resize
}
.box .tl,
.box .bl {
left: -5px;
}
.box .tr,
.box .br {
right: -5px;
}
.box .br,
.box .bl {
bottom: -5px;
}
.box .tl,
.box .tr {
top: -5px;
}
.box .tr,
.box .bl {
cursor: nesw-resize;
}
/*图片*/
img {
width: 100%;
height: 100%;
}
</style>
<script>
window.onload = function () {
var oDiv = document.getElementsByTagName('div')[0];
oDiv.style.width = '500px';
var aSpan = oDiv.getElementsByTagName('span');
for (var i = 0; i < aSpan.length; i++) {
dragFn(aSpan[i]);
}
function dragFn(obj) {
obj.onmousedown = function (ev) {
var oEv = ev || event;
var oldWidth = oDiv.offsetWidth;
var oldHeight = oDiv.offsetHeight;
var oldX = oEv.clientX;
var oldY = oEv.clientY;
var oldLeft = oDiv.offsetLeft;
var oldTop = oDiv.offsetTop;
document.onmousemove = function (ev) {
var oEv = ev || event;
if (obj.className == 'tl') {
oDiv.style.width = oldWidth - (oEv.clientX - oldX) + 'px';
oDiv.style.height=oldHeight-(oEv.clientY-oldY)+'px';
oDiv.style.left = oldLeft + (oEv.clientX - oldX) + 'px';
oDiv.style.top = oldTop + (oEv.clientY - oldY) + 'px';
}
else if (obj.className == 'bl') {
oDiv.style.width = oldWidth - (oEv.clientX - oldX) + 'px';
oDiv.style.height=oldHeight+(oEv.clientY-oldY)+'px';
oDiv.style.left = oldLeft + (oEv.clientX - oldX) + 'px';
oDiv.style.bottom = oldTop + (oEv.clientY + oldY) + 'px';
}
else if (obj.className == 'tr') {
oDiv.style.width = oldWidth + (oEv.clientX - oldX) + 'px';
oDiv.style.height = oldHeight - (oEv.clientY - oldY)+'px';
oDiv.style.right = oldLeft - (oEv.clientX - oldX) + 'px';
oDiv.style.top = oldTop + (oEv.clientY - oldY) + 'px';
}
else if (obj.className == 'br') {
oDiv.style.width = oldWidth + (oEv.clientX - oldX) + 'px';
oDiv.style.height = oldHeight + (oEv.clientY - oldY)+'px';
oDiv.style.right = oldLeft - (oEv.clientX - oldX) + 'px';
oDiv.style.bottom = oldTop + (oEv.clientY + oldY) + 'px';
}
else if (obj.className == 't') {
oDiv.style.height=oldHeight-(oEv.clientY-oldY)+'px';
oDiv.style.top = oldTop + (oEv.clientY - oldY) + 'px';
}
else if (obj.className == 'b') {
oDiv.style.height = oldHeight + (oEv.clientY - oldY)+'px';
oDiv.style.bottom = oldTop - (oEv.clientY + oldY) + 'px';
}
else if (obj.className == 'l') {
oDiv.style.height = oldHeight + 'px';
oDiv.style.width = oldWidth - (oEv.clientX - oldX) + 'px';
oDiv.style.left = oldLeft + (oEv.clientX - oldX) + 'px';
}
else if (obj.className == 'r') {
oDiv.style.height = oldHeight + 'px';
oDiv.style.width = oldWidth + (oEv.clientX - oldX) + 'px';
oDiv.style.right = oldLeft - (oEv.clientX - oldX) + 'px';
}
};
document.onmouseup = function () {
document.onmousemove = null;
};
return false;
};
}
};
</script>
</head>
<body>
<div class="box">
<span class="r"></span>
<span class="l"></span>
<span class="t"></span>
<span class="b"></span>
<span class="br"></span>
<span class="bl"></span>
<span class="tr"></span>
<span class="tl"></span>
<img src="https://gss0.bdstatic.com/70cFsjip0QIZ8tyhnq/img/iknow/730-350-0.jpg">
</div>
</body>
</html>
追问
大神 ~左右好想反了~~
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