如何使用javascript在后面的代碼中調用函數？

Question

我想從javascript調用位於后面代碼中的函數

按鈕 ：

<button class = "btn btn-outline btn-danger dim" type = "button" onclick = "confirmDelete ()"> <i class = "fa fa-trash"> </i> Delete </button>

Javascript 函數：

<script>
     function confirmDelete () {
         if (confirm ('Are you sure you want to delete this?')) {
             // call function Delete_Click ();
         }
         return false; // cancel the click event always
     }
 </script>

我想調用的函數：

protected void Delete_Click (object sender, EventArgs e)
     {
         try
         {
             Delete item
         }
         catch (Exception ex)
         {
             SetError (ex.Message);
         }
     }

如果我使用 <asp: Button> 或 <asp: LinkBut​​ton>，有一些 css 不顯示。 這就是為什么我使用

Answer 1

首先更改您的按鈕並添加runat 、 Id 、 OnClientClick和OnClick事件：

   <button Id="MyBtn" runat="server" 
    class = "btn btn-outline btn-danger dim" type ="button" 
    OnClientClick="return confirmDelete()" 
    OnClick="Delete_Click"> 
      <i class = "fa fa-trash"> </i> Delete 
    </button>

並更改您的 js 功能：

 function confirmDelete () {
     return confirm ('Are you sure you want to delete this?');
 }