Prevent (Restrict) first character zero in TextBox in JavaScript

Question

HiI have one text boxcurrently my requirement is that onkeypress of textbox element dont allow zero as 1st charactercould you please help me

dharmendr · Accepted Answer

Hi mahesh213Refer below sampleHTMLlthtmlgtltheadgt    ltmeta charset34utf834 gt    lttitlegtlttitlegt    ltscript type34textjavascript34gt        function RestrictFirstZeroe             if esrcElementvaluelength  0 ampamp ewhich  48                 epreventDefault                return false                            function PreventFirstZeroevent             if eventsrcElementvaluecharAt0  39039                 eventsrcElementvalue  eventsrcElementvalueslice1                        ltscriptgtltheadgtltbodygt    ltinput type34text34 id34txtNumber34 onkeypress34RestrictFirstZeroevent34 gt    lthr gt    ltinput onkeyup34PreventFirstZeroevent34 gtltbodygtlthtmlgtDemo

Prevent (Restrict) first character zero in TextBox in JavaScript

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