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This article mainly explains "how to use the filter in Vue". The content in the article is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought to study and learn how to use the filter in Vue.

The essence of the filter is a function, the function is that the user enters the data, the user can process it, and returns a data result.

The basic usage is as follows:

{{'abc' | uppercase}}

Become 'ABC''

There are roughly the following uses

Alphabetical operation: capitalize,uppercase,lowercase

Limit: limitBy,filterBy,orderBy

Json

Currency

Debounce

You can also customize the filter.

Filters: {abc: function (value) {return value.charAt (0) .toUpperCase () + value.slice (1)}}

At the same time, the filter can also receive parameters.

Single parameter

Multiple parameters

Bidirectional filter

Dynamic parameters (filter parameters are not wrapped in quotation marks)

At this point, the custom filter already knows how to write it, but there are still a few points to pay attention to.

A unique representation is required for a given filter. If the user-defined filter conflicts with the built-in filter, the built-in filter will be overwritten, and if the later registered filter conflicts with the previous filter, the previous filter will be overwritten

The function of the filter function is to input the value of the expression and output it after processing. Therefore, it is better for a defined function to return a meaningful value. The function can use return, but then the function is meaningless.

Thank you for your reading, the above is the content of "how to use the filter in Vue", after the study of this article, I believe you have a deeper understanding of how to use the filter in Vue, and the specific use needs to be verified in practice. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!

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