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| function checkOpen(failure, timeout = 2000) {
const { hidden, visibilityChange } = getSupportedProperty();
const timer = setTimeout(() => {
const pageHidden = isPageHidden(hidden);
if (!pageHidden) {
failure();
} else {
console.log('launch success!');
}
}, timeout);
if (typeof visibilityChange !== 'undefined') {
document.addEventListener(visibilityChange, () => {
clearTimeout(timer);
});
} else {
window.addEventListener('pagehide', () => {
clearTimeout(timer);
});
}
}
function getSupportedProperty() {
if (typeof document === 'undefined') return;
let hidden = 'hidden';
let visibilityChange = 'visibilitychange';
if (typeof document.hidden !== 'undefined') {
hidden = 'hidden';
visibilityChange = 'visibilitychange';
} else if (typeof document.msHidden !== 'undefined') {
hidden = 'msHidden';
visibilityChange = 'msvisibilitychange';
} else if (typeof document.webkitHidden !== 'undefined') {
hidden = 'webkitHidden';
visibilityChange = 'webkitvisibilitychange';
}
return {
hidden,
visibilityChange
};
}
function isPageHidden(hidden) {
if (typeof hidden === 'undefined') return false;
return document[hidden];
}
|
