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This article introduces the knowledge of "how to use filter in javascript". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

The role of filter in javascript is to create a new array, and the elements in the new array are checked for all eligible elements in the specified array, using the syntax "array.filter (function (currentValue,index,arr)...)".

This article operating environment: Windows7 system, javascript1.8.5 version, DELL G3 computer

What is the use of filter in javascript?

The filter () method creates a new array, and the elements in the new array are checked for all eligible elements in the specified array.

Note: filter () does not detect empty arrays.

Note: filter () does not change the original array.

Grammar

Array.filter (function (currentValue,index,arr), thisValue)

Parameter description

Example:

Click the button to return to the element in the array ages where all elements are greater than the value specified in the input box.

Minimum age:

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