If you use your hands to quickly draw a dry oil painting, the screen will become blurred. The blur attribute under CSS can achieve this fuzzy effect.
Let's take a look at the expression of the blur attribute:
Filter: blur (add = add, direction, strength = strength)
We can see that the blur attribute has three parameters: add, direction, and strength.
The Add parameter has two values: true and false. Indicates whether the image is blurred.
The Direction parameter is used to set the fuzzy Direction. The blur effect is performed clockwise. The value 0 indicates the vertical upward direction. Each 45 degrees is a unit. The default value is 270 degrees to the left. The corresponding relationship between the angle and direction is shown in the following table:
Let's look at an example.
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<Html> |
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Does it look like a kaleidoscope? In this example, some JavaScript statements are added. The code is as follows:
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| <Html> <Head> <Title> blur css </title> <Script> Function handlechange (obj) // * Set a loop function handlechange with the Object obj *// {With (obj. filters (0) // * filter attribute of Obj *// {If (strength <255) // * sets the cyclic condition *// {Strength + = 1; direction + = 45 ;} // * Add 1 to strength every cycle, and add 45 degrees to direction *// } } </Script> </Head> <Body> <P> Style = "filter: blur (strength = 1 )" Onfilterchange = "handlechange (this)"> // * Import an image. The initial blur attribute strength is equal to 1 and the onfilterchange function is called. Count *// </P> </Body> </Html> |
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Note: In javascript, the blur attribute is defined as follows:
[OBlurfilter =] object. Filters. blur
This is a complex example of the Blur attribute. In the next section, I will introduce two simple blur attribute effects.
You can also set fonts on the page through the blur attribute. If the value of the add parameter in the blur attribute of the font is defined as 1, the font effect is as follows (as shown in the figure below ):
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The implementation code of this effect is as follows: <Html> |
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We can see that strength is set to 25. If you increase the value, it will be very exaggerated. At the same time, the value of the Direction parameter is 180, which is displayed
Setting the font with the blur attribute can achieve a lot of results. You can modify the direction and strength to achieve a variety of effects. You can try it by yourself.
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