Problem to show message

function showMsg0() {
    $.message({
        title: '信息',
        content: 'new或NEW是保护字，不可以选为名字简称！',
        buttons: {
            OK: {
                text: 'OK',
                btnClass: 'btn-green',
                keys: ['enter'],
                action: function () {
                    //$.alert('You clicked OK!');
                }
            },
        }
    });
    return false;
};
...
        protected void userabbr_post_change(object sender, EventArgs e)
        {
            if (tb_userabbr.Text.ToUpper() == "NEW")
            {
                Page.ClientScript.RegisterStartupScript(this.GetType(), "alert", "showMsg0()", true);
                tb_userabbr.Text = "";
                return;
            }
        }

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