vue中监听手机物理返回键

mounted() {
    if (window.history && window.history.pushState) {
        history.pushState(null, null, location.href);
        window.addEventListener('popstate', this.leftBtnCallback, false);
    }
},

destroyed() {
    window.removeEventListener('popstate', this.leftBtnCallback, false);
},

activated() {
    if (window.history && window.history.pushState) {
        window.addEventListener('popstate', this.leftBtnCallback, false);
    }
},

deactivated() {
    window.removeEventListener('popstate', this.leftBtnCallback, false);
},