Debouncing in Javascript code example
Example 1: js throttle function
function throttle (callback, limit) {
var wait = false;
return function () {
if (!wait) {
callback.call();
wait = true;
setTimeout(function () {
wait = false;
}, limit);
}
}
}
window.addEventListener("scroll", throttle(function(){
}, 100));
Example 2: js debounce
function debounce(func, wait, immediate) {
var timeout;
return function() {
var context = this, args = arguments;
var later = function() {
timeout = null;
if (!immediate) func.apply(context, args);
};
var callNow = immediate && !timeout;
clearTimeout(timeout);
timeout = setTimeout(later, wait);
if (callNow) func.apply(context, args);
};
};
var myEfficientFn = debounce(function() {
}, 250);
window.addEventListener('resize', myEfficientFn);
Example 3: javascript debounce function
function debounce(func, wait, immediate) {
var timeout;
return function() {
var context = this, args = arguments;
var later = function() {
timeout = null;
if (!immediate) func.apply(context, args);
};
var callNow = immediate && !timeout;
clearTimeout(timeout);
timeout = setTimeout(later, wait);
if (callNow) func.apply(context, args);
};
};