Implement onurlchange Event

Even if modifying build-in functions isn't good hack...

function insertOnUrlChange(parent, funcname) {
    let oldFunc = parent[funcname] ? parent[funcname] : function (){}
    parent[funcname] = function() {
        oldFunc.apply(this, arguments)
        return window.onurlchange()
    }
}

insertOnUrlChange(window.history, "pushState")
insertOnUrlChange(window.history, "replaceState")

window.onurlchange = function() {
    doSomething()
}

window.history.pushState(null, null, "/hoge#foo=bar") // doSomething()