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execute javascript from code behind? RRS feed

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    User-125499312 posted

    how do <g class="gr_ gr_9 gr-alert gr_tiny gr_spell gr_inline_cards gr_run_anim ContextualSpelling multiReplace" id="9" data-gr-id="9">i</g> execute javascript from code behind?

    thx for ur help

    Wednesday, February 6, 2019 7:19 PM

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    User1120430333 posted

    how do i execute javascript from code behind?

    thx for ur help

    https://www.aspsnippets.com/Articles/Call-JavaScript-function-from-Code-Behind-without-using-ScriptManager-in-ASPNet-using-C-and-VBNet.aspx

    Wednesday, February 6, 2019 9:04 PM
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    User-1174608757 posted

    Hi yzidell,

    I suggest you to use ClientScript.RegisterStartupScript in code behind , so you could easily execute javascript  defined in front end or just written in code behind. Here is the demo , I hope it could help you.

    js defined in front end:

    aspx:

    <head runat="server">
    <title></title>
<script>
    function MyFunction()
    {
        alert("this is definded in front end")

    }

</script>
</head>
<body>
    <form id="form1" runat="server">
        <div>
            <asp:Button ID="Button1" runat="server" Text="Button" OnClick="Button1_Click" />
        </div>
    </form>
</body>
</html>

    aspx.cs:

      public partial class Script : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
           
        }

        protected void Button1_Click(object sender, EventArgs e)
        {
            ClientScript.RegisterStartupScript(this.GetType(), "CallMyFunction", "MyFunction()", true);

        }
    }

    It shows as below:

    When defined just in code behind:, you could write as below:

     public partial class Script : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
           
        }

        protected void Button1_Click(object sender, EventArgs e)
        {
            ClientScript.RegisterStartupScript(this.GetType(), "CallMyFunction", "alert('defined in code behind')", true);

        }
    }

    Best Regards

    Wei Zhang

    Thursday, February 7, 2019 3:00 AM