JSFiddle - React, Tailwind, and code Playground
HTML
<select name="evidence_selected"id="evidence_selected">
<option id="a">A</option>
<option id="b">B</option>
<option id="c">C</option>
<option id="new">New</option>
</select>
JavaScript
$('#evidence_selected').change(function(){
console.log('1');
if($(this).val() == "New"){
} else {
}
});