Is there a problem with scrollTop in Chrome?
I am setting scrollTop and scrollLeft for a div that I am working with.
The code looks like this:
div.scrollLeft = content.cx*scalar - parseInt(div.style.width)/2;
div.scrollTop = content.cy*scalar - parseInt(div.style.height)/2;
This works just fine in FF, but only scrollLeft works in chrome. As you can see, the two use almost identical equations and as it works in FF I am just wondering if this is a problem with Chrome?
Update: If I switch the order of the assignm开发者_如何转开发ents then scrollTop will work and scrollLeft won't.
<div id="container" style = "height:600px; width:600px; overflow:auto;" onscroll = "updateCenter()">
<script>
var div = document.getElementById('container');
function updateCenter()
{
svfdim.cx = (div.scrollLeft + parseFloat(div.style.width)/2)/scalar;
svfdim.cy = (div.scrollTop + parseFloat(div.style.height)/2)/scalar;
}
function updateScroll(svfdim, scalar, div)
{
div.scrollTop = svgdim.cy*scalar - parseFloat(div.style.height)/2;
div.scrollLeft = svgdim.cx*scalar - parseFloat(div.style.width)/2;
}
function resizeSVG(Root)
{
Root.setAttribute("height", svfdim.height*scalar);
Root.setAttribute("width", svfdim.width*scalar);
updateScroll(svgdim, scalar, div);
}
</script>
<body onload="resizeSVG(Root)" background="gray">
<script>
var prescrollLeft = 0;
var prescrollTop = 0;
function updateCenter()
{
if(div.scrollLeft != prescrollLeft)
{
svgdim.cx = (div.scrollLeft + parseFloat(div.style.width)/2)/scalar;
}
if(div.scrollTop != prescrollTop)
{
svgdim.cy = (div.scrollTop + parseFloat(div.style.height)/2)/scalar;
}
prescrollLeft = div.scrollLeft;
prescrollTop = div.scrollTop;
}
function updateScroll(svfdim, scalar, div)
{
div.scrollTop = svfdim.cy*scalar - parseFloat(div.style.height)/2;
div.scrollLeft = svfdim.cx*scalar - parseFloat(div.style.width)/2;
}
function resizeSVG(Root)
{
Root.setAttribute("height", svfdim.height*scalar);
Root.setAttribute("width", svfdim.width*scalar);
updateScroll(svfdim, scalar, div);
}
</script>
<div id="container" style = "height:600px; width:600px; overflow:auto;" onscroll = "updateCenter()" >
//some SVG
</div>
This fixed my problem. The problem was that onscroll is called twice since I am changing scrollLeft and scrollTop. Originally I wrote this with the intent to use scrollTo which would have done both scrolls in one call. I'm not quite sure why my original code worked in FF/Opera now...
加载中,请稍侯......
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