every方法 数组去重

使用every方法可以实现数组去重。下面是一个示例代码：

function deduplicationArray(arr) {
  let target = [];
  arr.forEach(item => {
    target.every(x => x !== item) && target.push(item);
  });
  return target;
}

这个函数接受一个数组作为参数，然后利用forEach方法遍历数组中的每一个元素。在遍历过程中，使用every方法判断目标数组中是否已经存在当前元素，如果不存在则将其添加进目标数组。最后返回目标数组，即为去重后的数组。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
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