Native js animation implementation function

Answer 1

The following are some examples of functions that native js can use to implement animations:
1. ** Encapsulated functions that support basic animation of elements (including width, height, and clarity, support chained animation and simultaneous motion)**:
- Firstly, there was a function to obtain the element's attributes and perform compatibility processing:
```javascript
function getStyle(obj, attr) {
if (obj.currentStyle) {
//Internet Explorer
return obj.currentStyle(attr);
} else {
//Browsers such as Chromeand FireFox
return getComputedStyle(obj, null)(attr);
}
}
```
- The animation function:
```javascript
var timer = null;
function animate(obj, json, callback) {
clearInterval(obj.timer);
obj.timer = setInterval(function () {
//This is the animation logic. You need to manipulate the animation of the object obj according to the specific JSon parameters (including the target style, etc.)
}, 0);
}
```
2. ** Li Liquhao's move function (native js animation effect)**:
- Function parameters:
- `obj`: The object to be animated.
- `attr`: The style of the animation, such as `left`,`top`,`width`,`height`.
- `target`: The target location of the animation.
- `speed`: Movement speed (positive numbers move to the right, negative numbers move to the left).
- 'callback': This function will be executed after the animation is completed.
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