var sum = 0; for( var i = 0; i < elmt.length; i++ ){ sum += parseInt( elmt[i], 10 ); //don’t forget to add the base }
var avg = sum/elmt.length;
document.write( "The sum of all the elements is: " + sum + " The average is: " + avg );
只需遍历数组，因为您的值是字符串，因此必须先将它们转换为整数。平均值就是值的总和除以值的数量。
我认为更优雅的解决方案：
const sum = times.reduce((a, b) => a + b, 0);
const avg = (sum / times.length) || 0;
console.log(`The sum is: ${sum}. The average is: ${avg}.`);
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