Returns a function, that, as long as it continues to be invoked, will not be triggered. The function will be called after it stops being called for N milliseconds. If immediate
is passed, trigger the function on the leading edge, instead of the trailing.
/**
* Returns a function, that, as long as it continues to be invoked, will not
* be triggered. The function will be called after it stops being called for
* N milliseconds. If `immediate` is passed, trigger the function on the
* leading edge, instead of the trailing.
*
* EX :
* var myEfficientFn = debounce(function() {
* // Code here
* }, 250);
* window.addEventListener('resize', myEfficientFn);
*
* @see https://davidwalsh.name/javascript-debounce-function
* @param {function} func Function to execute
* @param {number} wait Minimum delay between executions
* @param {boolean} immediate Execute function immediatly
* @return {function} Function execution
*/
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);
};
}