我正在尝试在HTML5中调整图片大小,有许多关于如何实现的示例,但我无法通过此点。这是一个对我不起作用的代码片段。
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>Picture Test</title>
<meta name="viewport" content="width=device-width" />
</head>
<body>
<form action="/MyWebsiteLogo/LogoPicture/95" enctype="multipart/form-data" id="picture" method="post">
<div style="width: 100%; padding: 0px;">
<input id="input" name="file" onchange="handleFiles()" type="file" value="" /><br /><br />
<input type="submit" value="Upload" />
</div>
<script>
function handleFiles() {
var fileList = input.files;
var file = fileList[0];
var img = document.createElement("img");
var reader = new FileReader();
reader.onload = function (e) { img.src = e.target.result }
reader.readAsDataURL(file);
var width = img.width;
var height = img.height;
}
</script>
</form>
</body>
</html>