jsonMystery2

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Main Page → Exercises → JavaScript → Solve an Exercise

Language/Type: JavaScript JSON objects

Author: Melissa Hovik (on 2018/10/22)

Consider the following JSON-formatted object:

let courses = {
    "CSE" : [
        { 142 : "CS1" },
        { 154 : "Web Programming" },
        { 311 : "Foundations to Computing" },
        { 404 : "History of Error Codes" }
    ],
    "BIO" : [
        { 200 : "Intro to Cellular Biology" },
        { 220 : "Animal and Plant Physiology" }
    ],
    "LING" : [
        { 100 : "Fundamentals of Grammar" }
    ]
};

Write the JavaScript value that would be returned for each of the following statements. Include "" around any string values. If any expression would result in an error, write error as your answer.

`courses["LING"]`
`courses.length`
`courses["CSE"].length`
`courses[404]`
`courses["CS1"]`
`courses["CSE"][0][0]`
`courses["CSE"][1][154]`
`courses["BIO"][0][200][16]`

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