如何使用jquery或JavaScript在一次浏览中上传多个文件

HTML

为输入文件设置属性倍数,请检查此链接https://developer.mozilla.org/en-US/docs/Web/API/Input.multiple

<form id="form-upload">
    <input type="file" name="upload" id="upload" multiple>
</form>

JS

要使用juery上传文件,您可以使用form-data：https://developer.mozilla.org/en-US/docs/Web/Guide/Using_FormData_Objects

$('#upload').bind("change",function(){
    var formData = new FormData($("#form-upload")[0]);
    //loop for add $_FILES["upload"+i] to formData
    for (var i = 0,len = document.getElementById('upload').files.length; i < len; i++) {
        formData.append("upload"+(i+1),document.getElementById('upload').files[i]);
    }

    //send formData to server-side
    $.ajax({
        url : "process_upload.PHP",type : 'post',data : formData,dataType : 'json',async : true,processData: false,// tell jQuery not to process the data
        contentType: false,// tell jQuery not to set contentType
        error : function(request){
            console.log(request.responseText);
        },success : function(json){
            //place your code here
        }
    }); 
});

服务器端(例如：PHP)

//just print $_FILES
print_r($_FILES);