reduce 方案
let myArray = ['a', 'b', 'a', 'b', 'c', 'e', 'e', 'c', 'd', 'd', 'd', 'd'] let myArrayWithNoDuplicates = myArray.reduce(function (previousValue, currentValue) { if (previousValue.indexOf(currentValue) === -1) { previousValue.push(currentValue) } return previousValue }, []) console.log(myArrayWithNoDuplicates)
es6 方案
let arrayWithNoDuplicates = Array.from(new Set(myArray))
参考:https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/Array/Reduce#%E6%95%B0%E7%BB%84%E5%8E%BB%E9%87%8D
其他方案参考:https://m.php.cn/article/461751.html