This article mainly introduces the method of JS to simply remove duplicate items in array, involving javascript traversal, judgment and operation related operation skills for array , Friends who need it can refer to
The example in this article describes a simple JS method to remove duplicate items in an array. Share it with everyone for your reference, the details are as follows:
<!DOCTYPE html>
<html lang="zh-cn">
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
<script>
var arr = ["aaa","bbb","aaa","ccc","ddd","ccc"];
function unique(arr) {
var result = [], hash = {};
for (var i = 0, elem; (elem = arr[i]) != null; i++) {
if (!hash[elem]) {
result.push(elem);
hash[elem] = true;
}
}
return result;
}
console.info(unique(arr));
</script>
</body>
</html>The renderings are as follows:
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