HTML onprogress屬性用法及代碼示例

HTML onprogress屬性是事件屬性，在瀏覽器下載指定的音頻或視頻時發生。

用法:

<element onprogress="myScript">

屬性值：此屬性包含單值腳本，該腳本在onprogress事件屬性調用時起作用。 <audio>和<video>標簽支持此屬性。

範例1：

<!DOCTYPE html> 
<html> 
    <head> 
        <title> 
            HTML onprogress Attribute 
        </title> 
    </head> 
  
    <body> 
        <center> 
            <h1 style="color:green;"> 
                GeeksforGeks 
            </h1> 
            <h2> 
                HTML onprogress Attribute 
            </h2> 
  
            <audio controls id="audioID" 
                   onprogress="GFGfun()"> 
                <source src= 
"https://media.geeksforgeeks.org/wp-content/uploads/20190625154540/hello-world.m4a" 
                        type="audio/mpeg" /> 
            </audio> 
  
            <script> 
                function GFGfun() { 
                    alert("audio progress"); 
                } 
            </script> 
        </center> 
    </body> 
</html>

輸出：

下調媒體後：

範例2：

<!DOCTYPE html> 
<html> 
    <head> 
        <title> 
            HTML onprogress Attribute 
        </title> 
    </head> 
  
    <body> 
        <center> 
            <h1 style="color:green;"> 
                GeeksforGeks 
            </h1> 
            <h2> 
                HTML onprogress Attribute 
            </h2> 
  
            <video controls id="vidID" 
                   onprogress="GFGfun()" 
                   width="320"
                   height="240"> 
                <source src= 
"https://media.geeksforgeeks.org/wp-content/uploads/20190401140735/g4g2.mp4" 
                        type="video/mp4" /> 
            </video> 
  
            <script> 
                function GFGfun() { 
                    alert("Video progress"); 
                } 
            </script> 
        </center> 
    </body> 
</html>

輸出：

後：

支持的瀏覽器：

穀歌瀏覽器
IE瀏覽器
Firefox
蘋果Safari
Opera

相關用法

注：本文由純淨天空篩選整理自ManasChhabra2大神的英文原創作品 HTML onprogress Attribute。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。