javascript - ASP Alert text before invoke onClick method -


basically have button , corresponding onclick method below:

<asp:button id="button1" runat="server" cssclass="button_short" text="save & submit" onclick="btnsave_click"></asp:button>  protected void btnsave_click(object sender, eventargs e)     {...}

now want have javascript confirm when button being click i've no idea how trigger btnsave_click method right after user click "ok"

try

 <asp:button id="button1" runat="server" cssclass="button_short" text="save"     onclick="btnsave_click" onclientclick="return confirm('are sure?');">   </asp:button>.

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