CSS animation-direction用法及代碼示例

CSS中的animation-direction屬性用於定義動畫的方向。動畫的方向應為向前，向後或交替循環。

用法:

animation-direction:normal|reverse|alternate|alternate-reverse|
initial|inherit;

屬性值：下麵列出了animation-direction屬性：
normal:此動畫屬性將動畫向前播放。它是默認值。

用法：
```
animation-direction:normal; 
```

Example:

<!DOCTYPE html>  
<html>  
    <head>  
        <title> 
            CSS | animation-direction Property 
        </title> 
        <style>  
            body { 
                text-align:center; 
            } 
            h1 { 
                color:green; 
            } 
            h3 {  
                width:100%;  
                animation-name:text;  
                animation-duration:2s;  
                animation-iteration-count:infinite;  
            }  
            #one {  
                animation-direction:normal;  
            }  
            @keyframes text {  
                from {  
                    margin-left:60%;  
                }  
                to {  
                    margin-left:0%;  
                }  
            }  
        </style>  
    </head>  
    <body>  
        <h1>GeeksforGeeks</h1>  
        <h2>animation-direction property</h2>  
        <h3 id="one">This text is normal.</h3>  
    </body>  
</html>

Output:

reverse：此動畫屬性以相反的方向播放動畫。

用法:
```
animation-direction:reverse;
```

例：

<!DOCTYPE html>  
<html>  
    <head>  
        <title> 
            CSS | animation-direction Property 
        </title> 
        <style>  
            body { 
                text-align:center; 
            } 
            h1 { 
                color:green; 
            } 
            h3 {  
                width:100%;  
                animation-name:text;  
                animation-duration:2s;  
                animation-iteration-count:infinite;  
            }  
            #one {  
                animation-direction:reverse;  
            }  
            @keyframes text {  
                from {  
                    margin-left:60%;  
                }  
                to {  
                    margin-left:0%;  
                }  
            }  
        </style>  
    </head>  
    <body>  
        <h1>GeeksforGeeks</h1>  
        <h2>animation-direction property</h2>  
        <h3 id="one">This text is reverse.</h3>  
    </body>  
</html>

輸出：

交替：此動畫屬性先播放動畫，然後播放動畫。

用法:
```
animation-direction:alternate; 
```

例：

<!DOCTYPE html>  
<html>  
    <head>  
        <title> 
            CSS | animation-direction Property 
        </title> 
        <style>  
            body { 
                text-align:center; 
            } 
            h1 { 
                color:green; 
            } 
            h3 {  
                width:100%;  
                animation-name:text;  
                animation-duration:2s;  
                animation-iteration-count:infinite;  
            }  
            #one {  
                animation-direction:alternate;  
            }  
            @keyframes text {  
                from {  
                    margin-left:60%;  
                }  
                to {  
                    margin-left:0%;  
                }  
            }  
        </style>  
    </head>  
    <body>  
        <h1>GeeksforGeeks</h1>  
        <h2>animation-direction property</h2>  
        <h3 id="one">This text is alternate.</h3>  
    </body>  
</html>

輸出：

alternate-reverse：此動畫屬性首先向後播放動畫，然後向前播放。

用法:
```
animation-direction:alternate-reverse;
```

例：

<!DOCTYPE html>  
<html>  
    <head>  
        <title> 
            CSS | animation-direction Property 
        </title> 
        <style>  
            body { 
                text-align:center; 
            } 
            h1 { 
                color:green; 
            } 
            h3 {  
                width:100%;  
                animation-name:text;  
                animation-duration:2s;  
                animation-iteration-count:infinite;  
            }  
            #one {  
                animation-direction:alternate-reverse; 
            }  
            @keyframes text {  
                from {  
                    margin-left:60%;  
                }  
                to {  
                    margin-left:0%;  
                }  
            }  
        </style>  
    </head>  
    <body>  
        <h1>GeeksforGeeks</h1>  
        <h2>animation-direction property</h2>  
        <h3 id="one">This text is alternate-reverse.</h3>  
    </body>  
</html>

輸出：

initial：此屬性用於將animation屬性設置為其默認值。

繼承：此屬性用於從其父元素繼承animation屬性。

支持的瀏覽器：下麵列出了animation-direction屬性支持的瀏覽器：

穀歌瀏覽器43.0
Internet Explorer 10.0
Firefox 16.0
Opera 30.0
Safari 9.0

相關用法

注：本文由純淨天空篩選整理自vt_m大神的英文原創作品 CSS | animation-direction Property。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。