JavaScript未定义为等于

Question

尝试创建一个函数，结果如下

describe('introductionWithLanguageOptional(name, language)', function() {
it('takes in two arguments, a name and a language, and language defaults to JavaScript', function() {
expect(introductionWithLanguageOptional("Susie")).toEqual("Hi, my name is Susie and I am learning to program in JavaScript.");
})
})

Answer 1

function introductionWithLanguageOptional(name, language = "JavaScript") {
return `Hi, my name is ${name} and I am learning to program in ${language}.`
}