jQuery-Ajax asynchronous file upload

Since we need to get the callback information after PHP upload, we studied the asynchronous file upload

Implementation method: use FormData to serialize the storage file, and specify two attributes as false

  • contentType
  • processData

Attribute explanation:

  • Use FormData to serialize files
  • Setting contentType: false is to prevent jQuery from processing contentType
  • Setting processData: false is to prevent jQuery from processing the data into strings

Sample reference:

html:

<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Upload</title>
	<script src="https://cdn.bootcss.com/jquery/3.4.1/jquery.js"></script>
	<script type="text/javascript">
		$(function () {
     
     
			$("button#upload").click(function(event) {
     
     
				var formdata = new FormData();
				formdata.append("file",$('input#test')[0].files[0]);
				$.ajax({
     
     
					url: '自己的上传文件接口',
					type: 'POST',
					contentType: false,
					processData: false,
					data: formdata
				})
				.done(function(data) {
     
     
					console.log(data);
				});	
			});
		});
	</script>
</head>
<body>
	<input id="test" type="file" />
	<button id="upload">点击上传</button>
</body>
</html>

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Origin blog.csdn.net/L333333333/article/details/104847584