图像naturalWidth返回零...就是这样,为什么?
var newimage = new Image();
newimage.src = 'retouche-hr' + newlinkimage.substring(14,17) + '-a.jpg';
var width = newimage.naturalWidth;
alert (width);
救命,我不知道为什么!
*该路径很好,图像显示出来了!
发布于 2009-10-30 01:07:11
我猜这是因为你没有等待图像加载--试试这个:
var newimage = new Image();
newimage.src = 'retouche-hr' + newlinkimage.substring(14,17) + '-a.jpg';
newimage.onload = function()
{
var width = this.naturalWidth;
alert(width);
}
发布于 2009-10-30 08:33:53
这是最终的工作代码..。以防有人想知道。这一切都是等待图像加载完成的问题!
<script type="text/javascript">
$(function() {
$("#thumb").jCarouselLite({
btnNext: "#down",
btnPrev: "#up",
vertical: true,
visible: 4
});
$("#thumb li img").click(function() {
var newlinkimage = $(this).attr("src");
newlinkimage = 'retouche-hr' + newlinkimage.substring(14,17);
$('#hr').remove();
var newimage = new Image();
newimage.src = newlinkimage + '-a.jpg';
newimage.onload = function()
{
var width = (newimage.width);
var height = (newimage.height);
$('#contentfull').append('<div id="hr"> </div>');
$("#hr").attr("width", width).attr("height", height);
$("#hr").addClass('hrviewer');
//alert('a');
$("#hr").append('<div id="avant"> <img alt="before" src="' + newlinkimage +'-a.jpg"></div>');
$("#hr").append('<div id="apres"> <img alt="after" src="' + newlinkimage +'-b.jpg"></div>');
//alert('b');
$("#avant img").attr("src", newlinkimage + '-a.jpg').attr("width", width).attr("height", height);
$("#apres img").attr("src", newlinkimage + '-b.jpg').attr("width", width).attr("height", height);
$("#apres img").load(function(){$("#hr").beforeAfter({animateIntro:true});});
}
})
});
</script>
发布于 2014-01-21 22:04:23
对我来说,下面的工作...
$('<img src="mypathtotheimage.png"/>').load(function () {
if (!isNotIe8) {
// ie8 need a fix
var image = new Image(); // or document.createElement('img')
var width, height;
image.onload = function () {
width = this.width;
height = this.height;
};
image.src = $(this).attr("src");
} else {
// everythings fine here ....
// this.naturalWidth / this.naturalHeight;
}
https://stackoverflow.com/questions/1645166
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