关于javascript:JS如何判断字符串或数组包含内容

const array1 = [1, 2, 3];console.log(array1.includes(2));// 预期输入: trueconst pets = ['cat', 'dog', 'bat'];console.log(pets.includes('cat'));// 预期输入: trueconsole.log(pets.includes('at'));// 预期输入: falseconst string1 = "taeas,wiki"console.log(string1.includes('taeas'));// 预期输入: true