I need to know if the shift key is being held down, while running the function, when the user drops,
I'm trying to use this code in javascript
<script type="text/javascript">
$(document).ready(function(){
$("body").keypress(function(event)
{
if(event.keyCode == 16) // se a tecla apertada for 13 (enter)
{
/* funçao a ser executada */
teste(); // abre uma janela
}
});
});
Focusing more on the part of the function execution while it is pressed:
var count = 0;
var mainFunction = function(){
console.log(++count);
}
$(document).keydown(function(e){
e.preventDefault();
if(e.shiftKey) mainFunction();
})<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>Pressioneshift// mainFunction será sua função executada
var count = 0;
var mainFunction = function() {
console.log(++count);
}
var execFunction; //interval com a função
$(document).keydown(function(e) {
e.preventDefault();
if (e.shiftKey) {
clearInterval(execFunction);
execFunction = setInterval(function() {
mainFunction();
}, 10);
}
})
$(document).keyup(function(e) {
e.preventDefault();
clearInterval(execFunction);
})<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<h2>O contador irá ser executado enquanto a tecla shift estiver sendo pressionada.</h2> Depending on how fast you want your function to run, I recommend using setInterval , because if you pay attention the call is faster. Besides of course, you can adjust delay .
What you should pay attention to is the use of keydown , instead of keyup , since replication can only occur in that event.
Try to use something like this code. In case you have to adapt your code to be applied in body .
function teste(e){
var evt = e || window.event;
if (evt.shiftKey) {
shiftKeyDown = "Pressionado";
alert(shiftKeyDown);
} else {
shiftKeyDown = "Não Pressionado";
alert(shiftKeyDown);
}
}<button onclick="teste()">Pressione Shift (Ou não)</button>I think it will help you a little bit.