I have a page with multiple buttons. When I press spacebar it runs the function. But if I press button x and again spacebar it runs the function of button x. How can I fix that?
const x = str => console.log(str);
const spacebar = () => console.log('space');
document.addEventListener("keydown", function(event) {
if (event.key === '1') {
x(event.key);
}
if (event.key === ' ') {
spacebar();
}
})<button onclick="x('button')"> x </button>
<button onclick="spacebar()"> spacebar </button>CodePudding user response：
Because your code runs on keydown, and spacebar presses the x button on keyup. You could remove the focus away from any other thing on the document, just to make sure space is not going to do something else.
const x = str => console.log(str);
const spacebar = () => console.log('space');
document.addEventListener("keydown", function(event) {
if (event.key === '1') {
x(event.key);
}
if (event.key === ' ') {
spacebar();
document.activeElement.blur(); // I just added this line
}
})<button onclick="x('button')"> x </button>
<button onclick="spacebar()"> spacebar </button>CodePudding user response：
Use preventDefault() to prevent the default browser behavior. Because your x button has the focus it runs again when pressing space in for example Google Chrome.
const x = str => console.log(str);
const spacebar = () => console.log('space');
document.addEventListener("keydown", function(event) {
if (event.key === '1') {
x(event.key);
}
if (event.key === ' ') {
event.preventDefault();
spacebar();
}
})<button onclick="x('button')"> x </button>
<button onclick="spacebar()"> spacebar </button>