<div id="back" style=" background-repeat:no-repeat; border:thin solid black; width:200px; height:230px;" >
<input type="file" id="image_file" name="image_file[]" multiple onchange="fileSelected();" />
<output id="list"></output>
function fileSelected() {
// get selected file element
var oFile = document.getElementById('image_file').files[0];
// filter for image files
var rFilter = /^(image\/bmp|image\/gif|image\/jpeg|image\/png|image\/tiff)$/i;
if (! rFilter.test(oFile.type)) {
document.getElementById('list').style.display = 'block';
return;
}
// get preview element
var oImage = document.getElementById('back');
// prepare HTML5 FileReader
var oReader = new FileReader();
oReader.onload = function(e){
// e.target.result contains the DataURL which we will use as a source of the image
oImage.style.backgroundImage = e.target.result;
oImage.onload = function () { // binding onload event
// we are going to display some custom image information here
sResultFileSize = bytesToSize(oFile.size);
document.getElementById('list').style.display = 'block';
document.getElementById('list').innerHTML = 'Name: ' + oFile.name;
};
};
// read selected file as DataURL
oReader.readAsDataURL(oFile);
}
我想根据文件选择设置 div 的背景,但我无法实现。
我可以使用 img 元素来做到这一点,但这不是我的要求。
每次使用文件输入选择 img 时,我都想更改 div 背景。
提前谢谢...请帮助