[英]JavaScript undefined to equal to
试图创建一个导致此的函数
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.");
})
})
function introductionWithLanguageOptional(name, language = "JavaScript") {
return `Hi, my name is ${name} and I am learning to program in ${language}.`
}
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