JSFiddle - React, Tailwind, and code Playground

HTML

Number of words correct <span id="span_WordsCorrect"></span>

JavaScript

var s1 = 'The dog sleeps';
var s2 = 'the dog jogs';

var s1Parts= s1.split(' ');
var s2Parts= s2.split(' ');

var score = 0;

for(var i = 0; i<s1Parts.length; i++)
{
     if(s1Parts[i] == s2Parts[i])
         score++;   
}

document.getElementById('span_WordsCorrect').innerHTML = score;