How to achieve fade in and fade out effect in jquery

The jquery method to achieve the fade-in and fade-out effect: first create a new text document and introduce jquery; then use the method [fadeIn()] to fade in the hidden elements; finally use the method [fadeOut()] to fade out the visible elements.

The operating environment of this tutorial: Windows 7 system, jquery version 3.2.1, Dell G3 computer.

How to achieve the fade-in and fade-out effect with jquery:

1. Create a new text document for code display and writing, as shown in the figure;

2. Create two divs with IDs div1 and div2, as shown in the figure;

3. Introduce jquery.js and connect It will be used next, as shown in the picture;

4, fadeIn() method can fade in the hidden elements, as shown in the picture;

5, fadeOut() method can fade out visible elements, as shown in the figure;

6, fadeToggle() method, if hidden, fade in, if visible, fade out;

7, fadeTo ("slow",0.4), as shown in the figure, can gradient to a given opacity

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