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Only worked for audio before

renderer/lib/location-history.js

@@ -4,6 +4,7 @@ function LocationHistory () {
   if (!new.target) return new LocationHistory()
   this._history = []
   this._forward = []
+  this._pending = null
 }
 
 LocationHistory.prototype.go = function (page) {
@@ -13,9 +14,12 @@ LocationHistory.prototype.go = function (page) {
 }
 
 LocationHistory.prototype._go = function (page) {
+  if (this._pending) return
   if (page.onbeforeload) {
+    this._pending = page
     page.onbeforeload((err) => {
       if (err) return
+      this._pending = null
       this._history.push(page)
     })
   } else {
@@ -59,3 +63,7 @@ LocationHistory.prototype.hasBack = function () {
 LocationHistory.prototype.hasForward = function () {
   return this._forward.length > 0
 }
+
+LocationHistory.prototype.pending = function () {
+  return this._pending
+}