Question

I have this jquery button click function:

   $("#NextButton_ButtonCtrl").live("click", function (event) {

    var i = 0;
    var success = 1;
    var n = $("input[type=File]").length;
    alert('number of files:' + n);

    $("input[type=File]").each(function () {

        success = 0;
        alert('for is here');
        /*var labelId = "FondationLabel" + i + "_LabelCtrl";
        var intitule = $("span[id=" + labelId + "]").text();
        var style = $(this).attr('style');
        var value = $(this).val();

        if (value == "" && style == "True") {
        success = 0;

        $("#errorSpan").html('<span ID=errorSpan class=error-span >Merci de charger le fichier' + intitule + '</span>');
        //var MPE = $find("MPE");
        // MPE.show();
        alert('Merci de charger le fichier' + intitule);

        return false;
        }
        i = i + 1;*/

    });
    alert(success);
    if (success == 0) {

        event.preventDefault();
        return false;
    }

the problem is when testing with ie :

 var n = $("input[type=File]").length;
        alert('number of files:' + n);

i get 0,chrom 4 (correct)

Answer 1

try a lowercase file $("input[type=file]").length as oppose to File

Reference from sitepoint.com

http://reference.sitepoint.com/css/attributeselector

Case Sensitivity The value specified in an attribute selector is case
sensitive if the attribute value in the markup language is case
sensitive. Thus, values for id and class attributes in HTML are case
sensitive, while values for lang and type attributes are not.

XHTML, when served as XML, is always case sensitive; see Differences
Between HTML and XHTML for more on this.

It’s not always easy to remember which HTML attributes are case
sensitive and which aren’t. It’s usually best to assume that
everything is case sensitive, but don’t rely on it!

UPDATE SECOND QUESTION

$("input[type=File]").each(function (i,n) {
    //$(n).attr('style');// note each. has a i,n on the function passed i, is for the increment, n is for the nth element,
    // sometimes, the each function when using $(this) may refer to every element selected, 
    // so i,n is the correct way to do it,
});

UPDATE 2

http://msdn.microsoft.com/en-us/library/985bhaz6.aspx

please check this how to add attributes, I’m not familiar with it but I think/hope this would work

writer.AddAttribute("data-style", "true");