How To Build A Global Search URL In Lightning Experience Using JavaScript

If your in lightning experience on click of any actionable item you want to take the user to the Global Search and perform the search action using the dynamic search string.To get the url of the global search in lightning using java script please refer the below code.

var searchStr = 'Sree'; //Search String
var stringToEncode = '{"componentDef":"forceSearch:search","attributes":{"term":"'+searchStr+ '","scopeMap":{"type":"TOP_RESULTS"},"context":{"disableSpellCorrection":false,"SEARCH_ACTIVITY":{"term":"'+ searchStr + '"}}}}';
var encodedStr = btoa(stringToEncode); //Base64 encoding
var redirectUrl='/one/one.app?source=aloha#'+encodedStr;

The format of url must be

     String redUrl = '/one/one.app?source=aloha#'+base64EncodedSearchString;

If you want to the same thing using apex please refer this post

Hope this helps you..Enjoy..!