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Calculator Exercise
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <title>Calculator</title> | |
| <style type="text/css"> | |
| .container { width: 300px; margin: 15px auto;} | |
| </style> | |
| </head> | |
| <body> | |
| <div class="container"> | |
| <img src="http://f.cl.ly/items/2Z1g1g1o0K3d360N3W0z/mathcat.png" alt="Math Cat" /> | |
| <h3>Let's Do Some Math!</h3> | |
| <input type="text" id="num_one" /> | |
| <br /><br /> | |
| <input type="text" id="num_two" /> | |
| <br /><br /> | |
| <input type="submit" value="Calculate" id="calculateBtn" /> | |
| <div class="answer"> | |
| <br /> | |
| Answer: <span id="answer"></span> | |
| </div> | |
| </div> | |
| <script src="main.js"></script> | |
| </body> | |
| </html> |
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| // Grab the inputs | |
| var input1 = document.querySelector('#num_one'); | |
| var input2 = document.querySelector('#num_two'); | |
| // grab the calculate button | |
| var calcBtn = document.querySelector('#calculateBtn'); | |
| // grab the answer field | |
| var answerField = document.querySelector('#answer'); | |
| // Value Holder | |
| var value1, value2; | |
| // Calculate the value of the Input Fields | |
| function calculate () { | |
| value1 = input1.value; | |
| value2 = input2.value; | |
| answerField.innerHTML = Number(value1) + Number(value2); | |
| } | |
| // Add a "watcher" to our button | |
| calcBtn.addEventListener('click', calculate); | |
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