JavaScript to filter arrays

This article example shares the specific code for JavaScript to implement array filtering for your reference. The specific content is as follows

Today, I used my knowledge of JavaScript to create an example of filtering an array. I hope we can learn from each other and make progress together!

Final result:

js code part:

<!DOCTYPE html>
<html lang="en">
<head>
 <meta charset="UTF-8">
 <meta name="viewport" content="width=device-width, initial-scale=1.0">
 <meta http-equiv="X-UA-Compatible" content="ie=edge">
 <title>Filter Array</title>
 <script>
  function Search(arr) {
   var newArr = [];
   for (var i = 0; i < arr.length; i++) {
    if (arr[i] > 10) {
     newArr[newArr.length] = arr[i];
   }
  }
   return newArr;
  }
  var arr = [1, 2, 45, 31, 7, 30, 22, 3, 5, 17];
  Search(arr);
  alert('The numbers you entered are '+arr+'\n'+'The numbers greater than 10 are: '+Search(arr));
 </script>
</head>
<body>
</body>
</html>

summary:

Filtering arrays is very common and important in various programming languages. I hope everyone can use it skillfully.

I saw a piece of code before: js filters the object array according to the array, share it with you

According to the array storing the id, filter the object with this id

var array = [
{
 time: '2020',
 id: '1',
},
{
 time: '2020',
 id: '2',
},
{
 time: '2020',
 id: '3',
}];
var filterIds = ['1', '3'];
var result = array.filter((a,i)=>{
  return filterIds.some(f=>(f === a.id)) 
})
//[{time: "2020", id: "1"},{time: "2020", id: "3"}

The above is the full content of this article. I hope it will be helpful for everyone’s study. I also hope that everyone will support 123WORDPRESS.COM.

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