A Pen by Godfred Asamoah on CodePen.
Created
August 14, 2018 17:31
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Andela challenge
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| <body onload=validateNumber()> | |
| <div id="main" class="box"> | |
| <h1>Armstrong Checker</h1> | |
| <p>Enter a 3-digit number below: <p/> | |
| <input type="text" id ="digits" onkeyup="validateNumber()" maxlength="3" size = 10> | |
| <input type="button" value="Check" class = "button" readonly="readonly" id="my_button" onclick="buttonClick()"> | |
| <div id="output" class="output"> | |
| Output | |
| </div> | |
| </div> | |
| </body> |
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| function validateNumber() { | |
| var number = document.getElementById("digits").value; | |
| var regex = new RegExp("[0-9]{3}"); | |
| disableButton(!regex.test(number)); | |
| } | |
| function disableButton(disable) { | |
| var button = document.getElementById("my_button"); | |
| if(disable) { | |
| button.style.backgroundColor = 'rgb(221, 221, 221)'; | |
| button.style.color = 'rgb(153, 153, 153)'; | |
| } else { | |
| button.style.color = ""; | |
| button.style.backgroundColor = ""; | |
| } | |
| } | |
| function getDigits(number) { | |
| return number.toString().split('').map((x) => parseInt(x));; | |
| } | |
| function isArmstrong(number) { | |
| let digits = getDigits(number); | |
| let armstrong = Math.pow(digits[0], 3) + Math.pow(digits[1], 3) + Math.pow(digits[2], 3); | |
| return number == armstrong; | |
| } | |
| function buttonClick() { | |
| var number = document.getElementById("digits").value; | |
| var button = document.getElementById("my_button"); | |
| if(button.style.backgroundColor === 'rgb(221, 221, 221)' || number === "") { | |
| alert("Your input must be a 3-digit number"); | |
| } | |
| else { | |
| var output = document.getElementById("output"); | |
| if (isArmstrong(number)) { | |
| output.innerHTML = "Ja! It is an Armstrong number!"; | |
| } else output.innerHTML = "Nein, it isn't an Armstrong number :("; | |
| } | |
| } |
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| body { | |
| background-color: aquamarine; | |
| background-position: 50% 50%; | |
| background-size: cover; | |
| } | |
| h1 { | |
| color: green; | |
| font-size: auto; | |
| margin-left: 100px; | |
| margin-right: auto; | |
| width: 360px; | |
| } | |
| #my_button { | |
| border-radius: 5px; | |
| margin: 5px 5px 5px 5px; | |
| height: 35px; | |
| width: 55px; | |
| } | |
| div.box { | |
| border: solid 1px #000000; | |
| background-color: #f9f9f9; | |
| width: 450px; | |
| margin-left: auto; | |
| margin-right: auto; | |
| } | |
| p { | |
| margin: 10px 100px 25px; | |
| font-weight: bold; | |
| } | |
| div.output { | |
| color: black; | |
| font-size: 20px; | |
| text-align: center; | |
| margin-left: auto; | |
| margin-right: auto; | |
| padding: 20px; | |
| word-wrap: break-word; | |
| background-color: gainsboro; | |
| } |
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