Created
November 23, 2016 10:30
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Traffic Lights
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset="utf-8"> | |
| <meta name="viewport" content="width=device-width"> | |
| <title>JS Bin</title> | |
| <style id="jsbin-css"> | |
| * { | |
| box-sizing: border-box; | |
| } | |
| main { | |
| padding: 50px 20px; | |
| } | |
| .traffic-light-box { | |
| width: 100px; | |
| border: 4px solid orange; | |
| border-radius: 15%; | |
| padding: 7px; | |
| margin: 0 auto; | |
| margin-bottom: 20px; | |
| } | |
| .traffic-light { | |
| margin: 0 auto; | |
| height: 80px; | |
| width: 80px; | |
| border: 1px black solid; | |
| border-radius: 50%; | |
| margin-bottom: 5px; | |
| } | |
| .red-light { | |
| border-color: red; | |
| } | |
| .yellow-light { | |
| border-color: yellow; | |
| } | |
| .green-light { | |
| border-color: green; | |
| } | |
| .red-on { | |
| background-color: red; | |
| } | |
| .yellow-on { | |
| background-color: yellow; | |
| } | |
| .green-on { | |
| background-color: green; | |
| } | |
| .controls { | |
| text-align: center; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <main> | |
| <div class="traffic-light-box"> | |
| <div class="traffic-light red-light"></div> | |
| <div class="traffic-light yellow-light"></div> | |
| <div class="traffic-light green-light"></div> | |
| </div> | |
| <div class="controls"> | |
| <button class="js-control-lights">click me</button> | |
| </div> | |
| <script src="https://code.jquery.com/jquery-3.1.0.js"></script> | |
| </main> | |
| <script id="jsbin-javascript"> | |
| function doTrafficLights() { | |
| var activeLight = getActiveLight(); | |
| if(activeLight === "yellow"){ | |
| turnYellow(); | |
| } | |
| else if(activeLight === "green"){ | |
| turnGreen(); | |
| } | |
| else if(activeLight === "red"){ | |
| turnRed(); | |
| } | |
| } | |
| 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 getActiveLight() { | |
| return (['red', 'green', 'yellow'])[Math.floor(Math.random() * 3)]; | |
| } | |
| function handleClicks() { | |
| $('.js-control-lights').click(function() { | |
| doTrafficLights(); | |
| }); | |
| } | |
| $(function() { | |
| handleClicks(); | |
| }) | |
| </script> | |
| <script id="jsbin-source-css" type="text/css">* { | |
| box-sizing: border-box; | |
| } | |
| main { | |
| padding: 50px 20px; | |
| } | |
| .traffic-light-box { | |
| width: 100px; | |
| border: 4px solid orange; | |
| border-radius: 15%; | |
| padding: 7px; | |
| margin: 0 auto; | |
| margin-bottom: 20px; | |
| } | |
| .traffic-light { | |
| margin: 0 auto; | |
| height: 80px; | |
| width: 80px; | |
| border: 1px black solid; | |
| border-radius: 50%; | |
| margin-bottom: 5px; | |
| } | |
| .red-light { | |
| border-color: red; | |
| } | |
| .yellow-light { | |
| border-color: yellow; | |
| } | |
| .green-light { | |
| border-color: green; | |
| } | |
| .red-on { | |
| background-color: red; | |
| } | |
| .yellow-on { | |
| background-color: yellow; | |
| } | |
| .green-on { | |
| background-color: green; | |
| } | |
| .controls { | |
| text-align: center; | |
| }</script> | |
| <script id="jsbin-source-javascript" type="text/javascript">function doTrafficLights() { | |
| var activeLight = getActiveLight(); | |
| if(activeLight === "yellow"){ | |
| turnYellow(); | |
| } | |
| else if(activeLight === "green"){ | |
| turnGreen(); | |
| } | |
| else if(activeLight === "red"){ | |
| turnRed(); | |
| } | |
| } | |
| 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 getActiveLight() { | |
| return (['red', 'green', 'yellow'])[Math.floor(Math.random() * 3)]; | |
| } | |
| function handleClicks() { | |
| $('.js-control-lights').click(function() { | |
| doTrafficLights(); | |
| }); | |
| } | |
| $(function() { | |
| handleClicks(); | |
| })</script></body> | |
| </html> |
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| function doTrafficLights() { | |
| var activeLight = getActiveLight(); | |
| if(activeLight === "yellow"){ | |
| turnYellow(); | |
| } | |
| else if(activeLight === "green"){ | |
| turnGreen(); | |
| } | |
| else if(activeLight === "red"){ | |
| turnRed(); | |
| } | |
| } | |
| 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 getActiveLight() { | |
| return (['red', 'green', 'yellow'])[Math.floor(Math.random() * 3)]; | |
| } | |
| function handleClicks() { | |
| $('.js-control-lights').click(function() { | |
| doTrafficLights(); | |
| }); | |
| } | |
| $(function() { | |
| handleClicks(); | |
| }) |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
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| * { | |
| box-sizing: border-box; | |
| } | |
| main { | |
| padding: 50px 20px; | |
| } | |
| .traffic-light-box { | |
| width: 100px; | |
| border: 4px solid orange; | |
| border-radius: 15%; | |
| padding: 7px; | |
| margin: 0 auto; | |
| margin-bottom: 20px; | |
| } | |
| .traffic-light { | |
| margin: 0 auto; | |
| height: 80px; | |
| width: 80px; | |
| border: 1px black solid; | |
| border-radius: 50%; | |
| margin-bottom: 5px; | |
| } | |
| .red-light { | |
| border-color: red; | |
| } | |
| .yellow-light { | |
| border-color: yellow; | |
| } | |
| .green-light { | |
| border-color: green; | |
| } | |
| .red-on { | |
| background-color: red; | |
| } | |
| .yellow-on { | |
| background-color: yellow; | |
| } | |
| .green-on { | |
| background-color: green; | |
| } | |
| .controls { | |
| text-align: center; | |
| } |
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