Enable Button when TextBox is not blank using JavaScript

Question

hve 2  text controls amp a button control on a web page amp a javascriptwhich enables  disables the button controlif any one text control is not  blank button gets enabled amp this script is called on the blur event of text it works fine but the issue is when i click the button the click event doesnot get fired amp the button gets disabled but instead after entering data in any textbox if i click outside anywhere amp then click the button control the click event  gets fired  why does

Mudassar · Accepted Answer

I have created a sample for youlthtml xmlns34httpwwww3org1999xhtml34gtlthead id34Head134 runat34server34gt    lttitlegtlttitlegt    ltscript type  34textjavascript34gt        function Toggle             var txt1  documentgetElementById34ltTextBox1ClientID gt34            var txt2  documentgetElementById34ltTextBox2ClientID gt34            var btn  documentgetElementById34ltButton1ClientID gt34            if txt1value  3434 ampamp txt2value  3434                 btndisabled  true             else                 btndisabled  false                        ltscriptgtltheadgtltbodygt    ltform id34form134 runat34server34gt    ltaspTextBox ID34TextBox234 runat34server34 onblur  34Toggle34gtltaspTextBoxgt    ltaspTextBox ID34TextBox134 runat34server34 onblur

Enable Button when TextBox is not blank using JavaScript

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