我正在上传文件之前检查文件的大小和扩展名,并且(大部分)代码运行正常。但是,如果文件具有正确的扩展名并且小于2MB,我无法从提交按钮中删除禁用的属性。我觉得好像有些小事我没有看到或忘记。我将不胜感激任何帮助或提示。无法从输入文件提交按钮中删除禁用的属性
感谢,
-Kyle
这里是我的代码:
<p>Select a logo to upload</p>
<input type="file" id="uploadFile" class="upload" name="upfile"><br>
<input type="submit" id="uploadSubmit" value="Upload Image" disabled="disabled">
document.getElementById("uploadFile").addEventListener("change", checkFile, true);
function checkFile(e) {
var files = e.target.files;
for (var i = 0, file; file = files[i]; i++) {
var fileName = file.name;
var fileExt = fileName.split(".")[fileName.split(".").length - 1].toLowerCase();
var fileSize = document.getElementById("uploadFile").files[0].size;
var fileSizeMB = (file.size/2097152).toFixed(2);
if (!(fileExt === "jpg" || fileExt === "eps" || fileExt === "tif" || fileExt === "tiff") || fileSize > 2097152) {
alert("There is an error with the file you selected. Please check the file size and/or the file type.");
} else {
$("#uploadSubmit").prop("disabled", false);
}
}
};
谢谢杨!我用document.getElementById(“uploadSubmit”)。disabled = true;和document.getElementById(“uploadSubmit”)。removeAttribute(“disabled”); – Kyle