Function waitForElement

Pagetual/pagetual.user.js:12394–12412

(sel, doc, maxTime)

    }

    async function waitForElement(sel, doc, maxTime) {
        if (!sel) return null;
        return new Promise((resolve) => {
            let passedTime = 0;
            let checkInv = setInterval(() => {
                let result = getElement(sel, doc, null, true);
                if (result) {
                    clearInterval(checkInv);
                    resolve(result);
                } else if (maxTime) {
                    passedTime += 100;
                    if (passedTime >= maxTime) {
                        clearInterval(checkInv);
                        resolve(result);
                    }
                }
            }, 100);
        });
    }

    async function waitForElements(sel, doc, maxTime) {
        if (!sel) return null;