JSFiddle - React, Tailwind, and code Playground
by kaleeswaran
HTML
<select id="gate" multiple>
<option value='null'>- choose -</option>
<option value='Gateway1'>Gateway 1</option>
<option value='Gateway2'>Gateway 2</option>
<option value='Gateway3'>Gateway 3</option>
</select>
JavaScript
//var data="Gateway1,Gateway2";
var arr = [ "Gateway2", "Gateway1"];
$("#gate").val(arr);