Windows 10: TypeError: Failed to execute 'readAsText' on 'FileReader': parameter 1 is not of type...

Discus and support TypeError: Failed to execute 'readAsText' on 'FileReader': parameter 1 is not of type... in Windows 10 Software and Apps to solve the problem; HTML Page: <input #csvReader type="file" name="myfile" class="btn btn-outlined btn-white mr-auto" id ="uploadUsers" accept=".csv"... Discussion in 'Windows 10 Software and Apps' started by Hari Y1, Oct 5, 2022.

  1. HARI Y1
    Hari Y1 Win User

    TypeError: Failed to execute 'readAsText' on 'FileReader': parameter 1 is not of type...


    HTML Page: <input #csvReader type="file" name="myfile" class="btn btn-outlined btn-white mr-auto" id ="uploadUsers" accept=".csv" change="onChange$event"/>component.tsonChange$event: any: void { let files = $event.srcElement.files; if this.isValidCSVFilefiles[0] { let input = $event.target; let reader: FileReader = new FileReader; reader.readAsTextinput.files[0]; console.log"input.files[0] : ",input.files[0] reader.onload = => { let csvData = reader.result; let csvRecordsArray = <string>csvData.sp

    :)
     
    Hari Y1, Oct 5, 2022
    #1
  2. RYANLY
    ryanly Win User

    GPU-Z what command line parameter ?

    Current /? (-?) or / help (-help) parameter is invalid
     
    ryanly, Oct 5, 2022
    #2
  3. JWOODY
    jwoody Win User
    TypeError


    One site gives TypeError*Tongueermission denied
     
    jwoody, Oct 5, 2022
    #3
  4. SAROJ KUMAR MISHRA
    Saroj Kumar Mishra Win User

    TypeError: Failed to execute 'readAsText' on 'FileReader': parameter 1 is not of type...

    Windows 10 Enterprise 14393 version + Edge 38.14393.x version not able to reaf file contets by FileReader from sharepoint online .

    If i put the below code in an .html file and run on windows 10 enterprise version (14393) + EDGE (38.14393.x)

    to read an xlsx file from desktop it is able to read the file contents ,

    but if i upload it to SharePoint online and referred the html file on a content editor and run it gives "UnknownError" .

    Notes:

    1. The same .xlsx file runs fine for ie11 and chrome in any windows OS from windows 7 +

    including windows 10 enterprise version

    2. if i try to read .txt file in windows 10 enterprise version (14393) + EDGE (38.14393.x) it is also working fine.

    <!doctype html>

    <title> FileReader test </title>

    <meta charset=utf-8>

    <style>

    body { font: 12pt 'Segoe UI',sans-serif }

    [type="file"] { display:block }

    </style>

    <script>

    (function(){

    var filereader=new FileReader(),

    i,list,next;

    **filereader.onloadend**=function(){

    if (this.error)

    alert(this.error.name + " " + this.error.message)

    else if (this.result)

    alert("Length=="+this.result.byteLength)

    next();

    }

    next=function(){

    if (i<list.length){

    if (filereader.readyState==filereader.LOADING)

    filereader.abort()

    else filereader.readAsArrayBuffer(list[i++])

    }

    else{ btn.disabled=false

    fpicker.value=""

    }

    }

    FRtest=function(fileList){

    btn.disabled=true

    list=fileList

    i=0

    next()

    }

    })()

    </script>

    <input id="fpicker" type="file" onchange="value&&FRtest(files)">

    <button id="btn" onclick="fpicker.click()">test</button>
     
    Saroj Kumar Mishra, Oct 5, 2022
    #4
Thema:

TypeError: Failed to execute 'readAsText' on 'FileReader': parameter 1 is not of type...

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