how to retrieve data from chrome extension storage and populate in form input using javascript -


i had stored data chrome storage want populate data in form input clicking submit button , form has no linked between chrome extension assume form third party how can populate data ideas.

suppose had 1 form of 1 text box , submit button clicking on submit button how textbox filled of data stored in chrome.

here script of chrome extension:

window.onload = function() {     document.getelementbyid('save').onclick = function() {         var value = document.getelementbyid('saveline').value;          chrome.storage.sync.set({             'myline': value         }, function() {             alert('success');         });     };     document.getelementbyid('get').onclick = function() {         chrome.storage.sync.get('myline', function(data) {             alert(data.myline);         });     } }


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