How i can store javascript array object saved somehow so that I can use it later [duplicate]

Answer 1

You can

1. store the value in memory, using JS

   var arr = [];
   arr.push(your_value);
   

2. keep creating new attribute/values in the dom using JS
3. pass the value from page to page through the query string
4. store the value in a cookie to be retrieved again
5. store the value on the server (in a file/db) to retrieve again

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Note:
Options 3 and 5 are only meaningful if you want to go to another page (on the site).
Options 4 and 5 are good if you want to close the browser and retrieve that info at a later point.