标签：function element code 数组 turn doc col 总数 write
使用 reduce 和 reduceRight 方法可以汇总数组元素的值，具体用法如下：
reduce
function appendCurrent (previousValue, currentValue) { return previousValue + "::" + currentValue; } var elements = ["abc", "def", 123, 456]; var result = elements.reduce(appendCurrent); document.write(result); //abc::def::123::456
reduceRight
function appendCurrent (previousValue, currentValue) { return previousValue + "::" + currentValue; } var elements = ["abc", "def", 123, 456]; var result = elements.reduceRight(appendCurrent); document.write(result); //456::123::def::abc
标签：function element code 数组 turn doc col 总数 write
原文地址：https://www.cnblogs.com/lanshu123/p/10516198.html
