Function getXhr

Picviewer CE+/dist.user.js:16764–16792

()

                    let img=imgSpan.querySelector("img,video");
                    let xhr = dataset(node, 'xhr') !== 'stop' && self.getPropBySpanMark(node, "xhr");
                    let getXhr = async () => {
                        let result = await new Promise((resolve) => {
                            let xhrError = function() {
                                dataset(node, 'xhr', 'stop');
                                dataset(node, 'src', dataset(node, 'thumbSrc'));
                                resolve(null);
                            };
                            xhrLoad.load({
                                url: curNode.dataset.src,
                                xhr: xhr,
                                cb: function(imgSrc, imgSrcs, caption) {
                                    if (imgSrc) {
                                        dataset(node, 'src', imgSrc);
                                        dataset(node, 'xhr', 'stop');
                                        if (caption) dataset(node, 'description', caption);
                                        img.dataset.src = imgSrc;
                                        resolve(imgSrc);
                                    } else {
                                        xhrError();
                                    }
                                },
                                onerror: xhrError
                            });
                        });
                        imgSpan.removeEventListener('getxhr', getXhrHandler);
                        delete imgSpan.dataset.xhr;
                        imgSpan.dispatchEvent(new Event('getxhrover'));
                        return result;
                    };
                    let getXhrHandler = e => {
                        getXhr();
                    };