无法使用 javascript 访问脚本标签中存在的变量值

Question

I am trying to access the value of a variable present inside a script tag. But I am not able to retrieve the value. I tried in few ways but I don't get the expected result.
I need to get the values and parse and do some operations over it but I am blocked from morning can u please some one help me it's ruining my time.

 var scriptTag = document.getElementsById('test'); console.log(scriptTag.window["ytInitialData"]); //shows undefined console.log(scriptTag.getAttribite(window["ytInitialData"])); // shows null

 <script id="test"> window["ytInitialData"] = { "responseContext": { "serviceTrackingParams": [{ "service": "GFEEDBACK" }] } }; window["ytInitialPlayerResponse"] = { "responseContext": { "serviceTrackingParams": [{ "service": "GFEEDBACK" }] } }; if (window.ytcsi) { window.ytcsi.tick("pdr", null, ''); } </script>

Answer 1

The window object is global and can be accessed from any script on your page, so set the window property like this:

window.ytInitialData = {
    "responseContext": {
      "serviceTrackingParams": [{
        "service": "GFEEDBACK"
      }]
   }
}

"ytInitialData" is a string literal so you can use dot notation instead of brackets.

Then access it again anywhere later in your script the same way:

console.log(window.ytInitialData)

 window.ytInitialData = { "responseContext": { "serviceTrackingParams": [{ "service": "GFEEDBACK" }] } } console.log(window.ytInitialData)