Page.frameAttached

Fired when frame has been attached to its parent.

{
  "name": "frameAttached",
  "description": "Fired when frame has been attached to its parent.",
  "parameters": [
    {
      "name": "frameId",
      "$ref": "FrameId",
      "description": "Id of the frame that has been attached."
    },
    {
      "name": "parentFrameId",
      "$ref": "FrameId",
      "description": "Parent frame identifier."
    },
    {
      "name": "stack",
      "$ref": "Runtime.StackTrace",
      "optional": true,
      "description": "JavaScript stack trace of when frame was attached, only set if frame initiated from script.",
      "experimental": true
    }
  ]
}