Function addUrlChangeEvent

Zhihu-Enhanced.user.js:1446–1464

()

// 自定义 urlchange 事件（用来监听 URL 变化）
function addUrlChangeEvent() {
    history.pushState = ( f => function pushState(){
        var ret = f.apply(this, arguments);
        window.dispatchEvent(new Event('pushstate'));
        window.dispatchEvent(new Event('urlchange'));
        return ret;
    })(history.pushState);

    history.replaceState = ( f => function replaceState(){
        var ret = f.apply(this, arguments);
        window.dispatchEvent(new Event('replacestate'));
        window.dispatchEvent(new Event('urlchange'));
        return ret;
    })(history.replaceState);

    window.addEventListener('popstate',()=>{
        window.dispatchEvent(new Event('urlchange'))
    });
}


function getXpath(xpath, contextNode, doc = document) {