Jquery Ajax Upload File (html5 FormData)

How to use Jquery Ajax to upload files with uploading progress

---

get single file

let data = $('input[tpye=file]')[0].files[0]
let file = new FormData()
file.append('file',data)

pakage uploading progress xhr function

function onprogress(){
    var loaded = evt.loaded;
    var tot = evt.total;
    var per = Math.floor(100*loaded/tot)
    console.log(per)
}

function xhr(){
    let xhr = $.ajaxSettings.xhr()
    if(onprogress && xhr.upload){
        xhr.upload.addEventListener("progress" , onprogress, false);
        return xhr;
    }
}

use $.ajax() to upload

$.ajax({
    url:'url address',
    type:'POST',
    contentType:false,
    processData:false,
    data:file,
    xhr:xhr,
    success:function(res){
        //handle funciton
    }
})

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