one could even change this: arr2 = arr1.map(function(a){return a.replace(/a/gi,"b")}); to ES6 syntax: arr2 = arr1.map(a => a.replace(/a/gi,"b"))
arr2 = arr1.map(function(a){return a.replace(/a/gi,"b")});
arr2 = arr1.map(a => a.replace(/a/gi,"b"))
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one could even change this:
arr2 = arr1.map(function(a){return a.replace(/a/gi,"b")});to ES6 syntax:
arr2 = arr1.map(a => a.replace(/a/gi,"b"))