Clash Royale CLAN TAG#URR8PPP

how can I disable the key in second time press same in jquery?

When press first time 37 it showing alert message, again press the same key second time I want to disable that key. How can do that?

$(document).on (‘keydown’ , function (e)
var userVal = e.which ∥ e.keycode
valadation (userVal)

)

function valadation (userVal)
if (37 == userVal)
alert (“Wecome”)




37

2 Answers
2

//name the handler
$(document.body).on('keydown', function alertOnEnter (e)
if ([e.keyCode, e.which].indexOf(13) > -1)
//remove the handler from the event
$(document.body).off('keydown', alertOnEnter);
alert('you hit enter');

);

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

Create a variable and update its value.

let clickVar = 0
$(document).on('keydown', function(e) )

function valadation(userVal)

if (37 === userVal && clickVar === 0)
alert('Welcome');
clickVar++



<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

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