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script.js
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// inside script.js
// all of our quotes
const quotes = [
'When you have eliminated the impossible, whatever remains, however improbable, must be the truth.',
'There is nothing more deceptive than an obvious fact.',
'I ought to know by this time that when a fact appears to be opposed to a long train of deductions it invariably proves to be capable of bearing some other interpretation.',
'I never make exceptions. An exception disproves the rule.',
'What one man can invent another can discover.',
'Nothing clears up a case so much as stating it to another person.',
'Education never ends, Watson. It is a series of lessons, with the greatest for the last.',
];
// store the list of words and the index of the word the player is currently typing
let words = [];
let wordIndex = 0;
// the starting time
let startTime = Date.now();
// page elements
const quoteElement = document.getElementById('quote');
const messageElement = document.getElementById('message');
const typedValueElement = document.getElementById('typed-value');
// at the end of script.js
document.getElementById('start').addEventListener('click', () => {
// get a quote
const quoteIndex = Math.floor(Math.random() * quotes.length);
const quote = quotes[quoteIndex];
// Put the quote into an array of words
words = quote.split(' ');
// reset the word index for tracking
wordIndex = 0;
// UI updates
// Create an array of span elements so we can set a class
const spanWords = words.map(function(word) { return `<span>${word} </span>`});
// Convert into string and set as innerHTML on quote display
quoteElement.innerHTML = spanWords.join('');
// Highlight the first word
quoteElement.childNodes[0].className = 'highlight';
// Clear any prior messages
messageElement.innerText = '';
// Setup the textbox
// Clear the textbox
typedValueElement.value = '';
// set focus
typedValueElement.focus();
// set the event handler
// Start the timer
startTime = new Date().getTime();
});
// at the end of script.js
typedValueElement.addEventListener('input', () => {
// Get the current word
const currentWord = words[wordIndex];
// get the current value
const typedValue = typedValueElement.value;
if (typedValue === currentWord && wordIndex === words.length - 1) {
// end of sentence
// Display success
const elapsedTime = new Date().getTime() - startTime;
const message = `CONGRATULATIONS! You finished in ${elapsedTime / 1000} seconds.`;
messageElement.innerText = message;
} else if (typedValue.endsWith(' ') && typedValue.trim() === currentWord) {
// end of word
// clear the typedValueElement for the new word
typedValueElement.value = '';
// move to the next word
wordIndex++;
// reset the class name for all elements in quote
for (const wordElement of quoteElement.childNodes) {
wordElement.className = '';
}
// highlight the new word
quoteElement.childNodes[wordIndex].className = 'highlight';
} else if (currentWord.startsWith(typedValue)) {
// currently correct
// highlight the next word
typedValueElement.className = '';
} else {
// error state
typedValueElement.className = 'error';
}
});