js中为何直接监听pushState事件无效？

没有onpushstate这个事件，当然无法监听到了。

可以把history劫持一下：

(function(history){
    var pushState = history.pushState;
    history.pushState = function(state) {
        if (typeof history.onpushstate == "function") {
            history.onpushstate({state: state});
        // ... whatever else you want to do
        // maybe call onhashchange e.handler
        return pushState.apply(history, arguments);
})(window.history);

history.onpushstate = function(e) {
    console.log('pushed');