Javascript: OnChange not firing

Question

I have a textbox that sets the onchange property but when i start typing in the textbox the onchange doesnt fire initially. it never fires whats going on?

Here is the code:

VB.NET

      Dim textBoxUrlYoutube As New TextBox
      divUrlTextBoxContainer.Controls.Add(textBoxUrlYoutube)
      textBoxUrlYoutube.CssClass = "textboxyoutubeurlmediaselector"
      textBoxUrlYoutube.Attributes.Add("onchange", 
                                       "YoutubeUrlSaveTextBoxOnChange(this)")

JAVASCRIPT

function YoutubeUrlSaveTextBoxOnChange(el) {

    var text = $(el).val();

    if (text == '') {

        $("a.linkplayyoutubeurl2").attr("class", "linkplayyoutubeurl1");
        $("div.divlinktext2").attr("class", "divlinktext1");

    }
    else {

        $("a.linkplayyoutubeurl1").attr("class", "linkplayyoutubeurl2");
        $("div.divlinktext1").attr("class", "divlinktext2");
    }

}

For problems with JavaScript interacting with HTML, show HTML and JavaScript … not server side code. — Quentin
– Quentin, Commented Feb 21, 2011 at 22:00

Quentin · Accepted Answer · 2011-02-21 21:59:57Z

5

Change events fire when the focus is lost, if a change has occurred.

If you want a change to fire with every keypress, use the keypress event.

answered Feb 21, 2011 at 21:59

Quentin

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2 Comments

redoc01 Over a year ago

Doward the problem with this keypress is that when you initally type a letter in te textbox the kepress event returns the text of the textbox to empty. i need a function that gets the value as sonn as the first charachter is typed in the textbox

T.J. Crowder Over a year ago

Or these days more than 11 years later, the input event.

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