jQuery.naturalWidth / jQuery.naturalHeight images natural Width Height Native Width (ok)
Lấy kích thước ảnh gốc
https://gist.github.com/johan/2209957
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<!-- Latest compiled and minified CSS & JS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css">
<script src="https://code.jquery.com/jquery.js"></script>
<style>
#imgsize >img {
width: 400px;
margin: 0 auto;
display: block;
}
</style>
</head>
<body>
<div id="imgsize">
<img src="rose.jpg" />
</div>
<script type="text/javascript">
(function($) {
function img(url) {
var i = new Image;
i.src = url;
return i;
}
if ('naturalWidth' in (new Image)) {
$.fn.naturalWidth = function() {
return this[0].naturalWidth;
};
$.fn.naturalHeight = function() {
return this[0].naturalHeight;
};
return;
}
$.fn.naturalWidth = function() {
return img(this.src).width;
};
$.fn.naturalHeight = function() {
return img(this.src).height;
};
})(jQuery);
var pi = $('#imgsize img').prop('naturalWidth');
console.log(pi);
</script>
</body>
</html>
Hoặc có thể sử dụng cách ngắn gọn hơn :)
Hoặc sử lý nhiều ảnh :)
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