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用 FormData，一个例子：
I'm pretty late for this but I was looking for an ajax based image uploading solution and the answer I was looking for was kinda scattered throughout this post. The solution I settled on involved the FormData object. I assembled a basic form of the code I put together. You can see it demonstrates how to add a custom field to the form with fd.append() as well as how to handle response data when the ajax request is done.Upload html:
<!DOCTYPE html> <html> <head> <title>Image Upload Form</title> <script src="//code.jquery.com/jquery-1.9.1.js"></script> <script type="text/javascript"> function submitForm() { console.log("submit event"); var fd = new FormData(document.getElementById("fileinfo")); fd.append("label", "WEBUPLOAD"); $.ajax({ url: "upload.php", type: "POST", data: fd, enctype: 'multipart/form-data', processData: false, // tell jQuery not to process the data contentType: false // tell jQuery not to set contentType }).done(function( data ) { console.log("PHP Output:"); console.log( data ); }); return false; } </script> </head> <body> <form method="post" id="fileinfo" name="fileinfo" onsubmit="return submitForm();"> <label>Select a file:</label><br> <input type="file" name="file" required /> <input type="submit" value="Upload" /> </form> <div id="output"></div> </body>2019-07-17 19:18:56赞同 展开评论 打赏
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