Consider the following JavaScript object:

let employee = {
name: "Bob",
salary: 80000,
benefits: {
bonus: 5000,
insurance: "full"
}
};

Which of the following correctly increases Bob's salary by 5000 and updates his bonus to be 15% of the new salary?

Question

Consider the following JavaScript object:

let employee = {
    name: "Bob",
    salary: 80000,
    benefits: {
        bonus: 5000,
        insurance: "full"
    }
};

Which of the following correctly increases Bob's salary by 5000 and updates his bonus to be 15% of the new salary?

BlackTom AI · Accepted Answer

We start by understanding the task: increase Bob's salary by 5000 and then set the bonus to 15% of the new salary.

Option 1: employee.salary += 5000; employee.benefits.bonus = employee.salary * 0.15;
- Step 1: The expression employee.salary += 5000 increments the salary property from 80000 to 85000.
- Step 2: The next expression updates the nested bonus property to be 0.15 times the (new) salary, which is 85000 * 0.15 = 12750.
- Result: salary is 85000 and bonus is 12750 inside employee.benefits. This matches the requirement of increasing salary by 5000 and setting the bonus to 15% of the new salary.

Option 2: employee["salary"] += 5000; employee["benefits"]["bonus"] = employee["salary"] * 0.15;
- Step 1: Using bracket notation, employee["salary"] += 5000; also increases the salary from 80000 to 85000, just like the dot notation in Option 1.
- Step 2: Then, employee["benefits"]["bonus"] = employee["salary"] * 0.15; computes 0.15 of the updated salary (85000) and assigns it to the nested bonus property.
- Result: The same end state as Option 1—salary 85000 and bonus 12750 within employee.benefits.

Both options perform the required two-step update in JavaScript object syntax:
- They correctly modify the top-level salary by +5000.
- They set the nested bonus to 15% of the new salary, ensuring the bonus reflects the updated salary value.

Common pitfalls to watch for in similar problems:
- Using the original salary (before the increment) when computing the bonus would yield the wrong bonus amount.
- Forgetting to update the nested bonus or accessing the wrong property (e.g., updating a non-existent path) would fail to reflect the required structure.
- Mixing different notation styles (dot vs bracket) is acceptable as long as they correctly reference the intended properties.

In summary, both provided options correctly accomplish the two-step update on Bob’s object structure, resulting in salary = 85000 and bonus = 12750.

Consider the following JavaScript object: let employee = { name: "Bob", salary: 80000, benefits: { bonus: 5000, insurance: "full" } }; Which of the following correctly increases Bob's salary by 5000 and updates his bonus to be 15% of the new salary?多项选择题

类似问题

From the previous question, what is the value of obj_outside.two.value after executing `change` function?

From the previous question, what is the value of obj_outside.one after executing the `change` function?

Which ONE of the following thalamic nuclei is targeted by the trigeminothalamic tract?

Which ONE of the following is disinhibited in the direct pathway of the basal ganglia motor loop

30. What is the main purpose of the lecture?

Section FChoose a, b or c as the best answer.29. Which statement is the speaker most likely to agree with?

28. 15-minute neighbourhoods provide residents with inexpensive ____ .

更多留学生实用工具

智能学习助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单