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Created October 17, 2017 16:03
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// ES 7
var fruits = ['mango', 'jack fruit', 'banana' ]
fruits.includes('mango') // true
fruits.includes('orange') // false
// Earlier
var fruits = ['mango', 'jack fruit', 'banana' ]
fruits.indexOf('banana') // returns 2 - index of the array
fruits.indexOf('orange') // return -1 means value is not available in array
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