Is there a way to check if Shift + letter is pressed in lodash's debounce?
fetchDebounced: _.debounce(function(e) { if (e.keyCode === 16 && e.keyCode >= 46 && e.keyCode <= 90) { console.log('shift + letter is pressed') } } Doesn't work in my case, using it on keyup event. I want to print out console message, only when SHIFT+LETTER, for example, Shift+a is pressed (or Shift+z). Is it possible?
You can use onkeydown and e.shiftKey:
document.onkeydown = function(e) { if (e.shiftKey && e.keyCode >= 46 && e.keyCode <= 90) { console.log("SHIFT + " + e.keyCode); return false; } } 
keyup instead of keydown that's why my shiftKey was never true.As per this answer:
event.shiftKeyis a boolean.trueif the Shift key is being pressed,falseif not.altKeyandctrlKeywork the same way.So basically you just need to detect the keydown as normal with
onkeydown, and check those properties as needed.
event in this example? console.log(event) outputs undefined for meTo achieve expected result, use below option of using shiftkey press and keyCode check between 65-90(A-Z) on key up to track as one event
function checkCode(e) { if(e.shiftKey){ console.log(e.shiftKey && (e.keyCode >= 65 || e.keyCode <= 90)) } }<input onkeyup = "checkCode(event)" />codepen - https://codepen.io/nagasai/pen/NVqMOg
Because people are answering, this is the best answer from this previously-asked question.
...onkeyup = function(e) { if (e.keyCode == 13) { // if (e.shiftKey === true) if (e.shiftKey) // thruthy { // new line } else { // run your function } return false; } } Also note Das_Geek's answer above, that altKey and ctrlKey work the same way, per the venerable Niet the Dark Absol.
keyCodecan't be between 46-90 at the same time. Try using theshiftKeyproperty instead of checking the shift keyCode