如何在保持宽高比的同时在网页上显示已调整大小的图像? [英] How to display resized images on a web page while maintaining aspect ratio?
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问题描述
使用JavaScript调整客户端图像大小的最佳和最快方法是什么?
What is the best and quickest way to resize images on the client side using JavaScript?
编辑:对不起,我的意思是显示在客户端调整大小的图像..
Sorry, I meant the best way to display an image resized on the client side..
推荐答案
轻松。
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Client-Side Image Resize (Why?!)</title>
<script type="text/javascript">
window.onload = function() {
var url = "http://www.google.com/intl/en_ALL/images/logo.gif";
var img = new Image();
img.onload = function() {
var w = parseInt((this.width + "").replace(/px/i, ""), 10);
var h = parseInt((this.height + "").replace(/px/i, ""), 10);
// 50% scale
w = (w / 2) + "px";
h = (h / 2) + "px";
var htmlImg = document.createElement("img");
htmlImg.setAttribute("src", url);
htmlImg.setAttribute("width", w);
htmlImg.style.width = w;
htmlImg.setAttribute("height", h);
htmlImg.style.height = h;
document.body.appendChild(htmlImg);
}
img.src = url;
}
</script>
</head>
<body>
<h1>Look, I'm Resized!</h1>
</body>
</html>
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