Create circular progress bar animation effect using CSS3 and SVG
Apr 04, 2025 am 07:21 AM
You can use CSS3 and SVG to create a circular progress bar animation effect. The steps are as follows: Create an SVG element and define a circular path; set a dotted line style for the circular path; use CSS3 animation to control the offset of the dashed line; set a progress percentage by adjusting the initial offset of the dashed line.
Create circular progress bar animation using CSS3 and SVG
The circular progress bar animation effect is a simple and effective way to show the progress or percentage of completion of a task. This effect can be easily created using CSS3 and SVG.
step:
1. Create an SVG element
Create an SVG element that will contain the progress bar. In the SVG element, define a circular path with a radius that is required for the progress bar.
<code><svg width="100" height="100"> <circle cx="50" cy="50" r="40" stroke-width="10" fill="none"></circle> </svg></code>
2. Set the dotted line style of the circle
Set a dotted line style for the circular path, and the dotted line interval should be the total length of the circle. Implemented by using the stroke-dasharray and stroke-dashoffset properties.
<code>circle { stroke-dasharray: 251.32741228718345; stroke-dashoffset: 251.32741228718345; }</code>
3. Use CSS3 animations
Use CSS3 animation to control the offset of the circular dotted line. The duration of the animation should be set to the time required for the progress to complete, and animation-fill-mode should be set to forwards so that the progress remains unchanged after the animation is completed.
<code>@keyframes progress { to { stroke-dashoffset: 0; } } circle { animation: progress 5s forwards; }</code>
4. Set progress percentage
Set the progress percentage by adjusting the initial value of stroke-dashoffset. Percent equals (1 - Percent of progress) * Total length of the circumference.
<code>circle { stroke-dashoffset: calc((1 - 0.5) * 251.32741228718345); }</code>
Sample code:
<code> <style> svg { width: 100; height: 100; } circle { stroke-width: 10; fill: none; stroke-dasharray: 251.32741228718345; stroke-dashoffset: 251.32741228718345; animation: progress 5s forwards; } @keyframes progress { to { stroke-dashoffset: 0; } } </style> <svg> <circle cx="50" cy="50" r="40"></circle> </svg> </code>The above is the detailed content of Create circular progress bar animation effect using CSS3 and SVG. For more information, please follow other related articles on the PHP Chinese website!
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