Back Space is Not working in textbox

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1.00/5 (2 votes)

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Hi All,

I Have multiline text box when I reaches 2000 characters my backspace button is not working
Can you guide me or send snippets

<asp:textbox ID="txtMydescritpion" runat="server" maxheight="200px" TabIndex="7" onkeypress="return textboxMultilineMaxNumber(this,2001,event);" MaxLength="2000"
ToolTip="Description" TextMode="MultiLine" Width="100%"
Height="70px">

<script type="text/javascript">
function textboxMultilineMaxNumber(txt, maxLen, evt) {

if (txt.value.length > (maxLen - 1)) {

return false;
}
}
</script>

Posted 13-Jul-15 3:35am

kingsa

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Kornfeld Eliyahu Peter · Accepted Answer · 2015-07-13T03:49:00

Solution 1

JavaScript

onkeypress="return textboxMultilineMaxNumber(this,2001,event);"

You just blocked the keypress event when crossing the 2000 border...
Your function will return false when the length is over 2000 and that will stop the propagation of the event further, so no default action will be taken (and no action of yours anywhere)...

Posted 13-Jul-15 3:49am

Kornfeld Eliyahu Peter

Comments

Sergey Alexandrovich Kryukov 13-Jul-15 9:54am

It's amazing how a person can fail to see what one has written by oneself. The correlation between 2000 and 2001 should look suspicious. My 5.
—SA

Kornfeld Eliyahu Peter 13-Jul-15 10:11am

Maybe that's the reason for code-review :-)

Thank you...

Sergey Alexandrovich Kryukov 13-Jul-15 10:50am

Sure. :-)
—SA

Smeezy 20-Jun-19 8:46am

I am quite certain that any novice asking questions on this forum knows some other subject to a depth that someone who knows coding could not understand without stumbling and asking questions. Why subject them to ridicule for asking questions that each and every one of you have probably asked at some point in your journey of learning? Do you believe you're superior because you learned it first? This phenomenon is present on every single coding forum. It's pathetic really.