What are the methods in Angular to achieve letter case conversion?

This time I will show you what methods Angular has to convert letters to upper and lower case, and what are theprecautions for converting letters to upper and lower case in Angular. The following is a practical case, let's take a look.

      
    输出大写 输出小写   

JS implements the function of exchanging left and right lists

Detailed explanation of the steps for returning to the previous page from the applet sharing page

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