<script type="text/javascript">
var nums = [1,2,3,4,5];
//计算数组的总和
var sum = nums.reduce(function(prev,cur,index,array){
return prev + cur
})
alert(sum); //15
</script>
<script type="text/javascript">
var nums = [1,2,3,4,5];
//计算数组的总和
var sum = nums.reduce(function(prev,cur,index,array){
return prev + cur
})
alert(sum); //15
</script>
原文：https://www.cnblogs.com/qqing/p/8455690.html