Your code is producing the error: TypeError: Cannot read property 'reduce' of undefined. What does that mean?

Your code is producing the error: TypeError: Cannot read property 'reduce' of undefined. What does that mean?

题目类型: 技术面试题

这是一道技术面试题，常见于澳洲IT公司面试中。

难度: medium

分类: JavaScript

标签: JavaScript

参考答案摘要

[x] You are calling a method named reduce on an object that's declared but has no value. You are calling a method named reduce on an object that's declared but has no value. [ ] You are calling a meth...

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