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| document.ready = function (callback) {
if (document.addEventListener) {
const handler = function () {
document.removeEventListener('DOMContentLoaded', handler, false);
callback();
};
document.addEventListener('DOMContentLoaded', handler, false);
} else if (document.attachEvent) {
const handler = function () {
if (document.readyState === "complete") {
document.detachEvent('onreadystatechange', handler);
callback();
}
};
document.attachEvent('onreadystatechange', handler);
} else if (document.lastChild === document.body) {
callback();
}
};
|