题解 | #Array.reduce#
Array.reduce
https://www.nowcoder.com/practice/213d0ef21cb841de8cf69fcc5ea60eb6
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<style>
/* 填写样式 */
</style>
</head>
<body>
<!-- 填写标签 -->
<script type="text/javascript">
// 填写JavaScript
Array.prototype._reduce = function(Fn){
if(typeof Fn !== 'function')return
let sum = 0
for(let i = 0;i < this.length-1;i++){
sum += Fn(this[i],this[i+1])
}
return sum
}
</script>
</body>
</html>
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