Trouble accessing the Google Hangout chat box through document.getElementById("id") method

Today I decided to investigate the design of the Google Hangout chatbox by using the Google Chrome inspector tool. After right-clicking on the chatbox text input element and inspecting it, here is what I discovered:

<div id=":cb.f" class="vE dQ editable" aria-label="Text entry field for Hangout with jhon carib" g_editable="true" role="textbox" contenteditable="true"></div>

Upon analyzing the HTML code, it appears that the id of the element is :cb.f. However, when attempting to copy the CSS path, I encountered this: "#\3a cb\2e f" indicating that the id is \3a.

Neither document.getElementById("\3a") nor document.getElementById(":cb.f") successfully retrieves the element node. Even using the class names proved ineffective.

Could someone clarify what might be happening in this situation?

Thank you,

javascriptgoogle-chrome

Answer №1

From what I can see, it appears that you are utilizing the Hangout extension within Chrome. When using Chrome, the Google extension chat window opens up in an iframe. To interact with the content inside the iframe, you will need to first access and select the DOM element within the iframe.

Answer №2

It has been noted that the hangout chat windows are contained within their own iframe, requiring access to the chat iframe's document. Unfortunately, this is not feasible when using the gmail website due to differing origins.

However, google has introduced a dedicated website specifically for hangouts at which does have the same origin.

You can now retrieve the chat div as follows:

var frm = document.getElementById('iframeid'); // id changes each time the page reloads
var doc = frm.contentDocument;
var chat = doc.getElementById(':cb.f'); // this id also changes with each reload

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