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88 lines
2.2 KiB
JavaScript
88 lines
2.2 KiB
JavaScript
7 months ago
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'use strict';
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// eslint-disable-next-line no-unused-vars
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const WPFormsUtils = window.WPFormsUtils || ( function( document, window, $ ) {
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/**
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* Public functions and properties.
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*
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* @since 1.7.6
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*
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* @type {object}
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*/
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const app = {
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/**
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* Wrapper to trigger a native or custom event and return the event object.
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*
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* @since 1.7.6
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*
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* @param {jQuery} $element Element to trigger event on.
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* @param {string} eventName Event name to trigger (custom or native).
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* @param {Array} args Trigger arguments.
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*
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* @returns {Event} Event object.
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*/
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triggerEvent: function( $element, eventName, args = [] ) {
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let eventObject = new $.Event( eventName );
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$element.trigger( eventObject, args );
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return eventObject;
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},
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/**
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* Debounce.
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*
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* This function comes directly from underscore.js:
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*
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* Returns a function, that, as long as it continues to be invoked, will not
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* be triggered. The function will be called after it stops being called for
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* N milliseconds. If `immediate` is passed, trigger the function on the
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* leading edge, instead of the trailing.
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*
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* Debouncing is removing unwanted input noise from buttons, switches or other user input.
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* Debouncing prevents extra activations or slow functions from triggering too often.
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*
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* @param {Function} func The function to be debounced.
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* @param {int} wait The amount of time to delay calling func.
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* @param {bool} immediate Whether or not to trigger the function on the leading edge.
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*
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* @returns {Function} Returns a function that, as long as it continues to be invoked, will not be triggered.
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*/
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debounce: function( func, wait, immediate ) {
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var timeout;
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return function() {
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var context = this,
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args = arguments;
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var later = function() {
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timeout = null;
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if ( ! immediate ) {
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func.apply( context, args );
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}
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};
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var callNow = immediate && ! timeout;
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clearTimeout( timeout );
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timeout = setTimeout( later, wait );
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if ( callNow ) {
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func.apply( context, args );
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}
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};
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},
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};
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// Provide access to public functions/properties.
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return app;
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}( document, window, jQuery ) );
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