JavaScript advanced exercises and simple example analysis, and javascript advanced

JavaScript advanced exercises and simple example analysis, and javascript advanced

When you click the "Statistics" button, the text box that appears in the window displays the most frequently used characters and displays the number of times they appear.

Click the statistics button:

Implementation Code:

<! DOCTYPE html> 
Js object attributes can be comprehensively used by js objects such as the features added later and the traversal of object attributes.

For more information about js, seeOperations on javascript objects
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