ajax上传文件

html

<input type="file" id="file1" />

jq代码 

var formData = new FormData();
 formData.append("myfile", document.getElementById("file1").files[0]); //获取图片的信息

$.ajax({
???????????url: "url",  //url地址
???????????type: "POST",
???????????dataType: ‘json‘,
???????????data: formData,
???????????/**
???????????*必须false才会自动加上正确的Content-Type,否则会执行error步骤
???????????*/
???????????contentType: false,
???????????/**
???????????* 必须false才会避开jQuery对 formdata 的默认处理，否则会报Uncaught TypeError: Illegal invocation
???????????* XMLHttpRequest会对 formdata 进行正确的处理
???????????*/
???????????processData: false,
???????????success: function (data) {
??????????????
???????????}
???????????
???????});

ajax上传文件

原文地址：https://www.cnblogs.com/zdzdbk/p/10158434.html