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HTML Input Submit autofocus用法及代碼示例


HTML DOM中的Input Submit autofocus屬性用於設置或返回在頁麵加載時Input Submit Field是否應獲得焦點。它反映了HTML自動對焦屬性。

用法:

  • 它返回自動對焦屬性。
    submitObject.autofocus
  • 用於設置自動對焦屬性。
    submitObject.autofocus = "true|false"

屬性值:


  • true:它設置提交按鈕的焦點。
  • false:它是默認值。它定義了提交按鈕字段不被關注。

返回值:它返回一個布爾值,該值表示提交字段是否自動聚焦。

範例1:本示例返回輸入提交自動對焦屬性。

<!DOCTYPE html>  
<html>  
  
<head>  
    <title>  
        HTML DOM Input Submit autofocus Property 
    </title>  
</head>  
  
<body style="text-align:center;">  
    <h1> 
        GeeksForGeeks 
    </h1> 
      
    <h2>  
        HTML DOM Input Submit autofocus Property  
    </h2> 
      
    <form id="myGeeks" action="#" method="get" target="_self"> 
      
    <input type = "submit" id = "Geeks"
        name="myGeeks" value = "Submit @ geeksforgeeks" autofocus> 
    </form> 
      
    <p> 
        click on below button to return the Property 
    </p> 
      
    <button onclick = "myGeeks()">  
        Click Here!  
    </button>  
      
    <p id = "GFG"style="font-size:25px;"></p>  
      
    <!-- Script to set submit disbled Property -->
    <script>  
        function myGeeks() {  
            var btn = document.getElementById("Geeks").autofocus; 
            document.getElementById("GFG").innerHTML =btn;  
        }  
    </script>  
</body>  
  
</html>                                  

輸出:
單擊按鈕之前:

單擊按鈕後:

範例2:本示例說明如何設置“輸入提交”自動對焦屬性。

<!DOCTYPE html>  
<html>  
  
<head>  
    <title>  
        HTML DOM Input Submit autofocus Property 
    </title>  
</head>  
  
<body style="text-align:center;">  
    <h1> 
        GeeksForGeeks 
    </h1> 
      
    <h2>  
        HTML DOM Input Submit autofocus Property  
    </h2>  
      
    <form id="myGeeks" action="#" method="get" target="_self"> 
      
    <input type = "submit" id = "Geeks" name="myGeeks"
        value = "Submit @ geeksforgeeks" autofocus> 
    </form> 
      
    <p> 
        click on below button to set the Property 
    </p> 
      
    <button onclick = "myGeeks()">  
        Click Here!  
    </button>  
      
    <p id = "GFG"style="font-size:25px;"></p>  
      
    <!-- Script to set submit autofocus Property -->
    <script>  
        function myGeeks() {  
            var btn = document.getElementById("Geeks").autofocus 
                    = false; 
                      
            document.getElementById("GFG").innerHTML = btn;  
        }  
    </script>  
</body>  
  
</html>                    

輸出:
單擊按鈕之前:

單擊按鈕後:

支持的瀏覽器:下麵列出了DOM Input Submit autofocus屬性支持的瀏覽器:

  • 穀歌瀏覽器
  • Internet Explorer 10.0
  • Firefox
  • Opera
  • Safari


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 | DOM Input Submit autofocus 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。