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This article shows you how to understand CDATA, the content is concise and easy to understand, can definitely make your eyes bright, through the detailed introduction of this article, I hope you can gain something.

Its real function is to let the interpreter know what the unequal sign is and what are keywords.

The content contained in this tag will be represented as plain text, such as the relationship between "text content" and xml transfer characters. Do they both seem to have repetitive functions?

Yes, their functions are the same, except that the application scenarios and requirements are somewhat different:

(1) it does not apply in all cases, and escape characters can

(2) wordy writing for short strings and poor readability for long string escape characters

(3) indicates that the xml parser ignores parsing, so it is faster.

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