JSFiddle - React, Tailwind, and code Playground

HTML

<div id='log1'></div>
<div id='log2'></div>

JavaScript

(function () {
    var i = 100000;
    
    var d1 = Date.now();
    
    var v = 'WolF';
    var q = ['Help', 'Push', 'Habr', 'WolF', 'Next'];
    
    while(i--) {
        if (v===q[0]) console.log(0);
        else if (v===q[1]) console.log(1);
        else if (v===q[2]) console.log(2);
        else if (v===q[3]) console.log(3);
        else console.log('not found');
    }
    
    var d2 = Date.now();
    $('#log1').text('If/else: ' + (d2 - d1));
})();

(function () {
    var i = 100000;
    
    var d1 = Date.now();
    
    var v = 'WolF';
    var q = ['Help', 'Push', 'Habr', 'WolF', 'Next'];
    
    while(i--) {
        switch(v) {
            case(q[0]):
                console.log(0);
                break;
            case(q[1]):
                console.log(1);
                break;
            case(q[2]):
                console.log(2);
                break;
            case(q[3]):
                console.log(3);
                break;
            default:
                console.log('not found');
                break;
        }
    }
    
    var d2 = Date.now();
    $('#log2').text('Switch/case: ' + (d2 - d1));
})();