Global variables in javascript do not work

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I am beginner to JavaScript. I am opening a html page, whose JavaScript file has a global variable token.

In the JavaScript file, I am opening another html link on some condition using the code:

if(data.status==="Success"){
  window.open("http://172.19.101.65:8001/","_self")
}

Now in the JavaScript file of the above html link, whichever is loaded, I am not able to access the value token through window.token.

I am not sure whether my approach is right or wrong. I would be thankful for the help.

You can use local storage: Work across pages

Set item: localStorage.setItem('token','value')

Get Item : localStorage.getItem('token')

PS: You can also use a cookie. Suitable and supported on almost every browser ;)

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