How to change font size in jquery

Changing the font size in jquery is a common need and can be achieved by following the following steps:

1. Select the element whose font size needs to be changed.

You can select the elements that need to change the font size through class names, tag names, IDs, etc., for example:

$('.my-class') //通过类名选择
$('p') //通过标签名选择
$('#my-id') //通过ID选择

2. Use the css() method to change the font size.

In jquery, you can use the css() method to change the CSS properties of an element. For example, to change the font size, you can use the following code:

$('.my-class').css('font-size', '16px');

This will set the font size of all selected elements with the class name "my-class" to 16 pixels. You can adjust the font size value according to your needs.

3. Apply animation effects.

If you want to apply an animation effect (such as a gradient effect) when the font size changes, you can use the animate() method:

$('.my-class').animate({'font-size': '16px'}, 500);

This will cause the selected element to change in 500 milliseconds Change the font size in a gradient manner.

4. Use variables to set font size.

Instead of hard-coding the font size, you can use variables to set the font size. For example, you can create a variable called "newSize" and set it to the desired size:

var newSize = '16px';
$('.my-class').css('font-size', newSize);

Summary:

By selecting the element, using css() or animate() Method to change font size is a simple and common way in jquery. Using variables to set the font size can also make the code more flexible and adaptable to various needs.

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