不用图片实现网页圆点效果

不用图片实现网页圆点效果

在网页设计中，圆点是一种常见的元素，用于表示确认或强调。然而，有时我们可能需要避免使用图片，而是使用其他方式来显示圆点。在本文中，我们将介绍一种不需要图片实现网页圆点效果的方法。

圆点效果可以通过CSS选择器和属性来实现。首先，我们需要选择一个圆点样式，例如：

```css

.circle {

fill: #ff0000;

circle-radius: 50%;

}

```

这将创建一个圆形元素，其半径为50% 。然后，我们可以添加一个事件监听器，以便在用户点击圆点时触发一个事件。例如：

```javascript

.circle:click {

fill: red;

}

```

这将在用户点击圆点时，将圆点颜色更改为红色。

接下来，我们可以使用JavaScript来更改圆点的颜色和大小。例如：

```javascript

var circle = document.querySelector('.circle');

circle.addEventListener('click', function() {

var radius = Math.floor(Math.random() * 100) + 50;

circle.style.circleRadius = radius;

circle.style.fill ='red';

});

```

这将在每次点击圆点时，随机增加圆点半径50，并更改圆点颜色为红色。

除此之外，我们还可以使用JavaScript来实现更复杂的圆点效果，例如：

```javascript

var circle = document.querySelector('.circle');

circle.addEventListener('click', function() {

var radius = Math.floor(Math.random() * 100) + 50;

var angle = Math.floor(Math.random() * 360) * 2 * Math.PI;

var angle2 = angle * 2;

var angle3 = angle2 * 2;

var angle4 = angle3 * 2;

var angle5 = angle4 * 2;

var angle6 = angle5 * 2;

var angle7 = angle6 * 2;

var angle8 = angle7 * 2;

var angle9 = angle8 * 2;

var angle10 = angle9 * 2;

var angle11 = angle10 * 2;

var angle12 = angle11 * 2;

var angle13 = angle12 * 2;

var angle14 = angle13 * 2;

var angle15 = angle14 * 2;

var angle16 = angle15 * 2;

var angle17 = angle16 * 2;

var angle18 = angle17 * 2;

var angle19 = angle18 * 2;

var angle20 = angle19 * 2;

var angle21 = angle20 * 2;

var angle22 = angle21 * 2;

var angle23 = angle22 * 2;

var angle24 = angle23 * 2;

var angle25 = angle24 * 2;

var angle26 = angle25 * 2;

var angle27 = angle26 * 2;

var angle28 = angle27 * 2;

var angle29 = angle28 * 2;

var angle30 = angle29 * 2;

var angle31 = angle30 * 2;

var angle32 = angle31 * 2;

var angle33 = angle32 * 2;

var angle34 = angle33 * 2;

var angle35 = angle34 * 2;

var angle36 = angle35 * 2;

var angle37 = angle36 * 2;

var angle38 = angle37 * 2;

var angle39 = angle38 * 2;

var angle40 = angle39 * 2;

var angle41 = angle40 * 2;

var angle42 = angle41 * 2;

var angle43 = angle42 * 2;

var angle44 = angle43 * 2;

var angle45 = angle44 * 2;

var angle46 = angle45 * 2;

var angle47 = angle46 * 2;

var angle48 = angle47 * 2;

var angle49 = angle48 * 2;

var angle50 = angle49 * 2;

var angle51 = angle50 * 2;

var angle52 = angle51 * 2;

var angle53 = angle52 * 2;

var angle54 = angle53 * 2;

var angle55 = angle54 * 2;

var angle56 = angle55 * 2;

var angle57 = angle56 * 2;

var angle58 = angle57 * 2;

var angle59 = angle58 * 2;

var angle60 = angle59 * 2;

var angle61 = angle60 * 2;

var angle62 = angle61 * 2;

var angle63 = angle62 * 2;

var angle64 = angle63 * 2;

var angle65 = angle64 * 2;

var angle66 = angle65 * 2;

var angle67 = angle66 * 2;

var angle68 = angle67 * 2;

var angle69 = angle68 * 2;

var angle70 = angle69 * 2;

var angle71 = angle70 * 2;

var angle72 = angle71 * 2;

var angle73 = angle72 * 2;

var angle74 = angle73 * 2;

var angle75 = angle74 * 2;

var angle76 = angle75 * 2;

var angle77 = angle76 * 2;

var angle78 = angle77 * 2;

var angle79 = angle78 * 2;

var angle80 = angle79 * 2;

var angle81