node.js - Accessing JavaScript variables from client and server -

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i have assigned variable value of text field

var x=document.getelementsbyclassname("base--textarea input--textarea")[0]["value"];),

this in ejs document. however, want extract "key words" text using node module keyword extractor. so, how access variable x server.js file, use keyword extractor method on , return extracted keyword(s) client?


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