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抵抗器のカラーコードは虹の色
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| <!DOCTYPE html> | |
| <html lang="ja"> | |
| <head> | |
| <title>COLOR CODE</title> | |
| <script defer src="https://unpkg.com/alpinejs@3.x.x/dist/cdn.min.js"></script> | |
| <style> | |
| body { | |
| display: flex; | |
| justify-content: space-evenly; | |
| } | |
| .resistor-value { | |
| text-align: center; | |
| } | |
| .resistor-image { | |
| display: flex; | |
| justify-content: space-evenly; | |
| background-color: #fdb; | |
| width: 300px; | |
| height: 80px; | |
| border-radius: 50px/100px; | |
| } | |
| .first-digit, .second-digit, .multiplier, .tolerance { | |
| width: 40px; | |
| } | |
| </style> | |
| <script> | |
| document.addEventListener('alpine:init', () => { | |
| const colors = [ | |
| 'black', 'brown', 'red', 'orange', 'yellow', | |
| 'green', 'blue', 'violet', 'gray', 'white', | |
| 'inherit', 'silver', 'gold' | |
| ] | |
| Alpine.data('Resistor', () => { | |
| return { | |
| firstDigit: 0, | |
| secondDigit: 0, | |
| multiplier: 0, | |
| tolerance: 1, | |
| incFirstDigit () { this.firstDigit = (this.firstDigit + 1) % 10 }, | |
| incSecondDigit () { this.secondDigit = (this.secondDigit + 1) % 10 }, | |
| incMultiplier () { this.multiplier = (this.multiplier + 1) % 10 }, | |
| incTolerance () { this.tolerance = (this.tolerance + 1) % 3 }, | |
| getFirstDigitStyle () { return `background-color: ${colors[this.firstDigit]};` }, | |
| getSecondDigitStyle () { return `background-color: ${colors[this.secondDigit]};` }, | |
| getMultiplierStyle () { return `background-color: ${colors[this.multiplier]};` }, | |
| getToleranceStyle () { return `background-color: ${colors[this.tolerance + 10]};` }, | |
| getDigit () { return this.firstDigit * 10 + this.secondDigit }, | |
| getTolerance () { return [20, 10, 5][this.tolerance] } | |
| } | |
| }) | |
| }) | |
| </script> | |
| </head> | |
| <body> | |
| <div x-data="Resistor"> | |
| <div class="resistor-value"> | |
| <span x-text="getDigit"></span>× 10<sup x-text="multiplier"></sup>Ω ± <span x-text="getTolerance"></span>% | |
| </div> | |
| <div class="resistor-image"> | |
| <div class="first-digit" @click="incFirstDigit" :style="getFirstDigitStyle"></div> | |
| <div class="second-digit" @click="incSecondDigit" :style="getSecondDigitStyle"></div> | |
| <div class="multiplier" @click="incMultiplier" :style="getMultiplierStyle"></div> | |
| <div class="tolerance" @click="incTolerance" :style="getToleranceStyle"></div> | |
| </div> | |
| </div> | |
| </body> | |
| </html> |
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