Method preload

Pagetual/pagetual.user.js:7162–7239

()

        }

        preload() {
            if (!rulesData.preload) return;
            if (this.curSiteRule.preload === 0) return;
            if (!this.nextLinkHref || this.nextLinkHref == "#") return;
            if (this.readyStateUnComplete) return;
            if (document.readyState !== 'complete') {
                this.readyStateUnComplete = true;
                let self = this;
                window.addEventListener("load", e => {
                    self.readyStateUnComplete = false;
                    self.preload();
                });
                return;
            }
            let self = this, url = this.nextLinkHref;
            let postParams = url.match(/#p{(.*)}$/);
            if (postParams) {
                postParams = postParams[1];
                url = url.replace(/#p{.*/, "");
            }
            fetch(url, {
                method: postParams ? 'POST' : 'GET',
                body: postParams,
                headers: {
                    'Referer': location.href,
                    'User-Agent': navigator.userAgent,
                    "Content-Type": (postParams ? "application/x-www-form-urlencoded" : "text/html") + ";charset=" + charset
                }
            }).then(response => response.text()).then(data => {
                var doc = null;
                try {
                    doc = document.implementation.createHTMLDocument('');
                    setHTML(doc.documentElement, data, doc);
                    var body = getBody(doc);
                    if (!self.preloadDiv) {
                        self.preloadDiv = document.createElement('div');
                        self.preloadDiv.id = "pagetual-preload";
                        self.preloadDiv.style.cssText = 'display:none!important;';
                        getBody(document).appendChild(self.preloadDiv);
                        self.checkedImgs = {};
                        self.unCheckedImgs = [];
                    }
                    let code = self.curSiteRule.preloadImages;
                    if (code) {
                        let imgSrcArr = new Function("doc", '"use strict";' + code)(doc);
                        if (imgSrcArr && imgSrcArr.length) {
                            imgSrcArr.forEach(imgSrc => {
                                if (imgSrc && !self.checkedImgs[imgSrc]) {
                                    self.checkedImgs[imgSrc] = true;
                                    self.unCheckedImgs.push(imgSrc);
                                }
                            });
                        }
                        self.preloadImageHandler();
                    } else if (code !== 0 && code !== false) {
                        if (body && body.firstChild) {
                            self.lazyImgAction(body.children, doc);
                        }