Created
March 18, 2021 16:32
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Calculate profit through chain methods
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| export default class Calculator { | |
| constructor() { | |
| this.value = 0; | |
| } | |
| revenue(value) { | |
| this.value = value; | |
| return this; | |
| } | |
| deductTax(percentage) { | |
| this.value = this.value - (percentage * this.value) / 100; | |
| return this; | |
| } | |
| // EU VAT convenience method | |
| deductVAT(percentage = 20) { | |
| return this.deductTax(percentage); | |
| } | |
| // UK Corporation tax convenience method | |
| deductCorpTax(percentage = 20) { | |
| return this.deductTax(percentage); | |
| } | |
| deductCost(value) { | |
| this.value = this.value - value; | |
| return this; | |
| } | |
| } | |
| // const a = new Calculator() | |
| // .revenue(1250) | |
| // .deductVAT() | |
| // .deductCorpTax(); | |
| // console.log(a.value); | |
| // Console Output | |
| // 800 |
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