wecuro_blog/php-form-builder/documentation/assets/javascripts/plugins/loaders/lazyload.min.js

!function(t,e){"object"==typeof exports?module.exports=e(t):"function"==typeof define&&define.amd?define([],e(t)):t.LazyLoad=e(t)}("undefined"!=typeof global?global:this.window||this.global,function(t){"use strict";const e={src:"data-src",srcset:"data-srcset",selector:".lazyload"},s=function(){let t={},e=!1,r=0,o=arguments.length;"[object Boolean]"===Object.prototype.toString.call(arguments[0])&&(e=arguments[0],r++);let n=function(r){for(let o in r)Object.prototype.hasOwnProperty.call(r,o)&&(e&&"[object Object]"===Object.prototype.toString.call(r[o])?t[o]=s(!0,t[o],r[o]):t[o]=r[o])};for(;r<o;r++){n(arguments[r])}return t};function r(t,r){this.settings=s(e,r||{}),this.images=t||document.querySelectorAll(this.settings.selector),this.observer=null,this.init()}if(r.prototype={init:function(){if(!t.IntersectionObserver)return void this.loadImages();let e=this;this.observer=new IntersectionObserver(function(t){t.forEach(function(t){if(t.intersectionRatio>0){e.observer.unobserve(t.target);let s=t.target.getAttribute(e.settings.src),r=t.target.getAttribute(e.settings.srcset);"img"===t.target.tagName.toLowerCase()?(s&&(t.target.src=s),r&&(t.target.srcset=r)):t.target.style.backgroundImage="url("+s+")"}})},{root:null,rootMargin:"0px",threshold:[0]}),this.images.forEach(function(t){e.observer.observe(t)})},loadAndDestroy:function(){this.settings&&(this.loadImages(),this.destroy())},loadImages:function(){if(!this.settings)return;let t=this;this.images.forEach(function(e){let s=e.getAttribute(t.settings.src),r=e.getAttribute(t.settings.srcset);"img"===e.tagName.toLowerCase()?(s&&(e.src=s),r&&(e.srcset=r)):e.style.backgroundImage="url("+s+")"})},destroy:function(){this.settings&&(this.observer.disconnect(),this.settings=null)}},t.lazyload=function(t,e){return new r(t,e)},t.jQuery){const e=t.jQuery;e.fn.lazyload=function(t){return(t=t||{}).attribute=t.attribute||"data-src",new r(e.makeArray(this),t),this}}return r});