1.2 KiB
1.2 KiB
title | localeTitle |
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Catch Unclosed Parentheses, Brackets, Braces and Quotes | 抓住未封闭的圆括号,括号,括号和引号 |
抓住未封闭的圆括号,括号,括号和引号
reduce()方法将数组减少为单个值。如果您不熟悉它,以下代码显示了使用该方法的示例:
const array1 = [1, 2, 3, 4];
console.log(array1.reduce((accumulator, currentValue) => accumulator + currentValue)); // expected output: 10
您还可以将reduce方法的参数定义为变量或常量,并将其移交给函数,例如,
const array1 = [1, 2, 3, 4];
const reducer = (accumulator, currentValue) => accumulator + currentValue;
// 1 + 2 + 3 + 4
console.log(array1.reduce(reducer)); // expected output: 10
// 5 + 1 + 2 + 3 + 4
console.log(array1.reduce(reducer, 5)); // expected output: 15
您可以在Array.prototype.reduce()中查看并运行此代码。
解:
let myArray = [1, 2, 3];
let arraySum = myArray.reduce((previous, current) => previous + current);
console.log(`Sum of array values is: ${arraySum}`);