Home > Article > Web Front-end > String + array deduplication practical case analysis
This time I will bring you a practical case analysis of string and array deduplication. What are the precautions for string and array deduplication? The following is a practical case. Let’s take a look.
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title> js数组、字符串去重</title>
</head>
<body>
<script type="text/javascript">
/*数组去重*/
function quchong(arr){
var len = arr.length;
arr.sort();
for(var i=len-1;i>0;i--){
if(arr[i]==arr[i-1]){
arr.splice(i,1);
}
}
return arr;
}
var a = ["a","a","b",'b','c','c','a','d'];
var b = quchong(a);
console.log(b);
/*字符串去重*/
function quchongstr(str){
var a = str.match(/\S+/g);//等价于str.split(/\s+/g)// \s空白符，\S非空白符
a.sort();
for(var i=a.length-1;i>0;i--){
if(a[i]==a[i-1]){
a.splice(i,1);
}
}
return a.join(" ");
}
var str = quchongstr("a a b a b e");
console.log(str);
</script>
</body>
</html>
Run results:
I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the php Chinese website!
Recommended reading:
How to generate random numbers with JS
##How to use jquery layur pop-up layer in actual projects
The above is the detailed content of String + array deduplication practical case analysis. For more information, please follow other related articles on the PHP Chinese website!