1 let arr= ['baidu', 'google', 'taobao']; 2 3 console.log(arr.includes('baidu')); //true 4 console.log(arr.includes('baidu1')); //false
1 let arr= ['baidu', 'google', 'taobao']; 2 3 console.log(arr.includes('baidu')); //true 4 console.log(arr.includes('baidu1')); //false
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