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- function doTrafficLights() {
- const activeLight = getActiveLight();
- // your code will replace this call
- // to `console.log()`
- if(activeLight === 'green') {
- turnGreen();
- } if (activeLight === 'yellow') {
- turnYellow();
- }
- if (activeLight === 'red') {
- turnRed();
- }
- }
- // this function randomly returns red, yellow, or green
- // and is called by doTrafficLights.
- // don't modify it!
- function getActiveLight() {
- return (['red', 'green', 'yellow'])[Math.floor(Math.random() * 3)];
- }
- /* From here down, you are not expected to
- understand.... for now :)
- Nothing to see here!
- */
- function turnOffLights() {
- $('.traffic-light').removeClass('yellow-on red-on green-on');
- }
- function turnGreen() {
- turnOffLights();
- $('.green-light').addClass('green-on');
- }
- function turnYellow() {
- turnOffLights();
- $('.yellow-light').addClass('yellow-on');
- }
- function turnRed() {
- turnOffLights();
- $('.red-light').addClass('red-on');
- }
- function handleClicks() {
- $('.js-control-lights').click(function() {
- doTrafficLights();
- });
- }
- $(function() {
- turnOffLights();
- handleClicks();
- });
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