JS : .reduce() Method

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1. const newNumbers = [1, 3, 5, 7];
   
2. 
   
3. const newSum = newNumbers.reduce((accumulator, currentValue) => {
   
4.   console.log('The value of accumulator: ', accumulator);
   
5. console.log('The value of currentValue: ', currentValue);
   
6.   return accumulator + currentValue;
   
7. }, 10);
   
8. console.log(newSum);

複製代碼

這是 .reduce() 方法。