JSFiddle - React, Tailwind, and code Playground

by dmethvin

HTML

<select multiple>
    <option value="OPTION1">Option #1</option>
    <option value="OPTION2">Option #2</option>
</select>

JavaScript

var sel = document.getElementsByTagName("select")[0];
sel.onchange = function(){
    for ( var i=0; i < this.options.length; i++ ) {
        this.options[i].selected = false;
    }
    this.options[0].selected = true;
}