javascript - How to capture ALT+C keypress - Stack Overflow

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I want catch an event for Alt+c or something like that. My code is html

<input type="text" id="name"/>

JavaScript

$("#name").keydown(function(e) {
    if(e.keyCode == 67 && e.keyCode == 18){alert(e.keyCode);} 
});

where is the problem? How it works on both Chrome & firefox?

I want catch an event for Alt+c or something like that. My code is html

<input type="text" id="name"/>

JavaScript

$("#name").keydown(function(e) {
    if(e.keyCode == 67 && e.keyCode == 18){alert(e.keyCode);} 
});

where is the problem? How it works on both Chrome & firefox?

• javascript
• jquery

Share Improve this question Follow edited Mar 6, 2018 at 23:11 L Y E S - C H I O U K H 5,10099 gold badges4242 silver badges5959 bronze badges asked Feb 11, 2015 at 16:00 Iftakharul AlamIftakharul Alam 3,32144 gold badges2424 silver badges3333 bronze badges 2

• I think you need to look into the e.altKey and e.ctrlKey. Try the answers in here stackoverflow./questions/93695/… or stackoverflow./questions/4604057/… – mr rogers Commented Feb 11, 2015 at 16:03
• I understand your confusion, but if you think about it, e.keyCode can't be two different values at the same time. So if you need to check for two keypresses at once, you'll need a different mechanism. That's what e.altKey is for. – Katie Kilian Commented Feb 11, 2015 at 16:07

Add a ment  | 

3 Answers 3

Sorted by: Reset to default 4

You need to check for e.altKey instead:

if(e.altKey && e.keyCode == 67){alert(e.keyCode);} 

Basically, you are checking for two codes as the same time. The event (e) has several values you can work with ... including altKey which is a boolean (true or false) ...

Try ... watching the e.altKey and the e.keyCode values.

$("#name").keydown(function(e) {
    if(e.altKey && e.keyCode == 67) {
        alert(e.keyCode);
    } 
});

With the right version of jQuery, there should be no issue between browsers.

$(document).keydown(function(e) {
//console.log(e.keyCode); If you want to check other keys code
if(e.keyCode == 67 || e.keyCode == 18){
console.log("alt or c pressed");
}
});

You can work around this to check if the two keys are pressed at the same time. I sujest you to use an aux var set to zero wich increase his value when keydown event triggered and decrease it when keyup.

I want catch an event for Alt+c or something like that. My code is html

<input type="text" id="name"/>

JavaScript

$("#name").keydown(function(e) {
    if(e.keyCode == 67 && e.keyCode == 18){alert(e.keyCode);} 
});

where is the problem? How it works on both Chrome & firefox?

I want catch an event for Alt+c or something like that. My code is html

<input type="text" id="name"/>

JavaScript

$("#name").keydown(function(e) {
    if(e.keyCode == 67 && e.keyCode == 18){alert(e.keyCode);} 
});

where is the problem? How it works on both Chrome & firefox?

• javascript
• jquery

Share Improve this question Follow edited Mar 6, 2018 at 23:11 L Y E S - C H I O U K H 5,10099 gold badges4242 silver badges5959 bronze badges asked Feb 11, 2015 at 16:00 Iftakharul AlamIftakharul Alam 3,32144 gold badges2424 silver badges3333 bronze badges 2

• I think you need to look into the e.altKey and e.ctrlKey. Try the answers in here stackoverflow./questions/93695/… or stackoverflow./questions/4604057/… – mr rogers Commented Feb 11, 2015 at 16:03
• I understand your confusion, but if you think about it, e.keyCode can't be two different values at the same time. So if you need to check for two keypresses at once, you'll need a different mechanism. That's what e.altKey is for. – Katie Kilian Commented Feb 11, 2015 at 16:07

Add a ment  | 

3 Answers 3

Sorted by: Reset to default 4

You need to check for e.altKey instead:

if(e.altKey && e.keyCode == 67){alert(e.keyCode);} 

Basically, you are checking for two codes as the same time. The event (e) has several values you can work with ... including altKey which is a boolean (true or false) ...

Try ... watching the e.altKey and the e.keyCode values.

$("#name").keydown(function(e) {
    if(e.altKey && e.keyCode == 67) {
        alert(e.keyCode);
    } 
});

With the right version of jQuery, there should be no issue between browsers.

$(document).keydown(function(e) {
//console.log(e.keyCode); If you want to check other keys code
if(e.keyCode == 67 || e.keyCode == 18){
console.log("alt or c pressed");
}
});

You can work around this to check if the two keys are pressed at the same time. I sujest you to use an aux var set to zero wich increase his value when keydown event triggered and decrease it when keyup.

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