hi how get value query string from javascript,

<script type="text/javascript">
    $(document).ready(function () {
        var urlParams = new URLSearchParams(window.location.search);
        var TextBox1Value = urlParams.get('Textbox1');  

        var TextBox1 = document.getElementById("<%= TextBox1.ClientID %>");
        alert(TextBox1);
        if (TextBox1) {
            TextBox1.value = TextBox1Value;
        } else {
            console.error("TextBox1 not found");
        }
    });
</script>

value http://localhost:53001/form/formemployeenew.aspx?Textbox1=1233

TextBox1Value put to texboxt1

thanks