input 实现一次性上传文件

在实际项目中可能会用到，上传多个文件请求一次接口，因此，主要代码

$('#tabList').on('click','.resetWorkStatus',function(){
		var that = $(this);
		var curExamId = that.attr('data-value');
		that.prev().addClass('selectWorkStatus');
		layer.open({
			text:"本地上传",
			closeBtn:0,
			btn:['上传','取消'],
			content:'<div style="text-align:center;" id="cont"><input type="file" class="" id="file"  multiple="" value="选择文件"></div>'
			,success:function(){
				console.log('成功');
			},
			yes:function(){
				//console.log('上传');

				var formData = new FormData();
				console.log($("#file"));
				var files = $("#file")[0].files;
				for(var i =0;i<files.length;i++){
					//var name = files[i].name;
			        var file = files[i];
			        formData.append("files", file);
			        //formData.append("name" + i, name);
				}
				formData.append("id", curExamId);
				console.log(formData);
				$('.layui-layer-btn0,.layui-layer-btn1').hide();
				$('.layui-layer-content').text('答题卡上传中，请耐心等待');
			    $.ajax({
			        url: "/exam/smallExam/uploadAnswerCardLocal",
			        type: 'POST',
			        data: formData,
			        processData: false,    // ⑧告诉jQuery不要去处理发送的数据
			        contentType: false,    // ⑨告诉jQuery不要去设置Content-Type请求头
			        success: function (res) {
			        	console.log(res);
			        },
			        error : function (responseStr) {
			        }
			    });

			}
		})
	})