前言：
如今各位老铁们对“ie6pngjs”大概比较关切，咱们都想要知道一些“ie6pngjs”的相关文章。那么小编同时在网摘上收集了一些关于“ie6pngjs””的相关资讯，希望你们能喜欢，看官们一起来学习一下吧！<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" ""><html xmlns=""> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>Firefox3,IE6,IE7,IE8上传图片预览</title> <style type="text/css"><!-- #preview_wrapper{ display:inline-block; width:300px; height:300px; background-color:#CCC; } #preview_fake{ filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod=scale); } #preview_size_fake{ filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod=image); visibility:hidden; } #preview{ width:300px; height:300px; } --></style><style type="text/css" mce_bogus="1"> #preview_wrapper{ display:inline-block; width:300px; height:300px; background-color:#CCC; } #preview_fake{ filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod=scale); } #preview_size_fake{ filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod=image); visibility:hidden; } #preview{ width:300px; height:300px; } </style> <script type="text/javascript"><!-- function onUploadImgChange(sender){ if( !sender.value.match( /.jpg|.gif|.png|.bmp/i ) ){ alert('图片格式无效！'); return false; } var objPreview = document.getElementByIdx( 'preview' ); var objPreviewFake = document.getElementByIdx( 'preview_fake' ); var objPreviewSizeFake = document.getElementByIdx( 'preview_size_fake' ); if( sender.files && sender.files[0] ){ objPreview.style.display = 'block'; objPreview.style.width = 'auto'; objPreview.style.height = 'auto'; // Firefox 3 请使用此代码 //objPreview.src = sender.files[0].getAsDataURL(); //firefox 8 请使用此代码 // objPreview.src = window.URL.createObjectURL(sender.files[0]); //chrome 请使用此代码 //objPreview.src = window.webkitURL.createObjectURL(sender.files[0]); if (sender.files[0].getAsDataURL) objPreview.src = sender.files[0].getAsDataURL(); if (window.URL.createObjectURL) objPreview.src = window.URL.createObjectURL(sender.files[0]); if (window.webkitURL.createObjectURL) objPreview.src = window.webkitURL.createObjectURL(sender.files[0]); if (window.createObjectURL) objPreview.src = window.createObjectURL(sender.files[0]); //实例化file reader对象// var img = new Image();// var reader = new FileReader();// reader.onload = function (e) {// img.src = this.result; // e.target.result// // oDragWrap.appendChild(img);// }// reader.readAsDataURL(sender.files[0]); }else if( objPreviewFake.filters ){ // IE7,IE8 在设置本地图片地址为 img.src 时出现莫名其妙的后果 //（相同环境有时能显示，有时不显示），因此只能用滤镜来解决 sender.select(); var imgSrc = document.selection.createRange().text; objPreviewFake.filters.item( 'DXImageTransform.Microsoft.AlphaImageLoader').src = imgSrc; objPreviewSizeFake.filters.item( 'DXImageTransform.Microsoft.AlphaImageLoader').src = imgSrc; autoSizePreview( objPreviewFake, objPreviewSizeFake.offsetWidth, objPreviewSizeFake.offsetHeight ); objPreview.style.display = 'none'; } //sender.blur(); } function onPreviewLoad(sender){ autoSizePreview( sender, sender.offsetWidth, sender.offsetHeight ); } function autoSizePreview( objPre, originalWidth, originalHeight ){ var zoomParam = clacImgZoomParam( 300, 300, originalWidth, originalHeight ); objPre.style.width = zoomParam.width + 'px'; objPre.style.height = zoomParam.height + 'px'; objPre.style.marginTop = zoomParam.top + 'px'; objPre.style.marginLeft = zoomParam.left + 'px'; } function clacImgZoomParam( maxWidth, maxHeight, width, height ){ var param = { width:width, height:height, top:0, left:0 }; if( width>maxWidth || height>maxHeight ){ rateWidth = width / maxWidth; rateHeight = height / maxHeight; if( rateWidth > rateHeight ){ param.width = maxWidth; param.height = height / rateWidth; }else{ param.width = width / rateHeight; param.height = maxHeight; } } param.left = (maxWidth - param.width) / 2; param.top = (maxHeight - param.height) / 2; return param; } // --></script> </head> <body> <div id="preview_wrapper"> <div id="preview_fake"> <img id="preview" src="data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==" onload="onPreviewLoad(this)"/> </div> </div> <br/> <input id="upload_img" type="file" onchange="onUploadImgChange(this)"/> <br/> <img id="preview_size_fake"/> </body> </html> ---说明：chrome浏览器对window.webkitURL.createObjectURL的支持出现的了一些问题，未找到替代方法，希望有些找到后能通知我~~
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标签： #ie6pngjs #js上传图片 #js预览 #html js 根据文字生成图片
