what is react conditional rendering

In react, conditional rendering refers to rendering under specified conditions. If the conditions are not met, no rendering will be performed; that is, the content of the interface will display different content according to different situations, or decide whether to render a certain part. content. React conditional rendering method: 1. Conditional judgment statement, suitable for situations with more logic; 2. Ternary operator, suitable for situations with relatively simple logic; 3. AND operator "&&", suitable for rendering a certain item if the condition is true Component, if the condition is not met, nothing will be rendered.

#The operating environment of this tutorial: Windows7 system, react18 version, Dell G3 computer.

Conditional rendering, as the name suggests, means "rendering under certain conditions" and "not rendering under other conditions" - a typical if-else scenario.

React Conditional Rendering

#In some cases, the content of the interface will display different content according to different situations, or decide whether to render a certain part of the content:

• In vue, we will control it through instructions: such as v-if, v-show;
• In React, all conditional judgments are the same as ordinary The JavaScript code is consistent;

What are the common methods of conditional rendering?

Method 1: Conditional judgment statement

• Suitable for situations with more logic

Method 2: Ternary operator

• Suitable for relatively simple logic

Method 3: Suitable with operator &&

• if condition If the condition is established, a certain component will be rendered; if the condition is not established, nothing will be rendered;

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