javascript validation for spacing in front of a string typed in the textbox

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ASP.NET

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How to set validation via javascript for spacing in front of a string typed in the textbox.

Posted 4-Nov-13 16:52pm

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JoCodes 5-Nov-13 2:40am

Only front space ? space between words should be validated?

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Soumitra Mithu · Answer 1 · 2013-11-04T18:12:00

Solution 1

check this article
Java Script validation for not allowing Spaces.[^]

Posted 4-Nov-13 18:12pm

Soumitra Mithu

JoCodes · Answer 2 · 2013-11-04T21:24:00

If your intention is to validate only the leading space try the indexOf method in Javascript

Something like below

C#

function CheckLeadingSpace()
{
  var txt= document.getElementById('txtBoxID');
  var n=txt.value.indexOf(" ",0);//Checks the space in position 1
  if (n == 0) {
            alert("InValid");
            return false;
   }
  return true;

}

Try this on TextBox onblur or keyup event etc. 

Hope this helps...