<form id="calx_form">
    <input data-cell="A1">
    <input data-cell="A2">
    <input data-cell="A3">
    <input data-formula="SUM(A1:A3)">
    <input data-formula="AVERAGE(A1:A3)">
    <input data-formula="(A1+A2)*A3">
    <input data-formula="(A1^2)+(A2^2)+(A3^2)">
</form>
<script>
    $('#calx_form').calx();
</script>

<form id="calx_form">
    <input data-cell="A1">
    <input data-cell="A2">
    <input data-cell="A3">
    <input data-cell="B1">
    <input data-cell="B2">
    <input data-cell="B3">
    <input data-cell="B4">
</form>
<script>
    $('#calx_form').calx({
        data : {
            B1 : {format: '$ 0,0', formula: 'SUM(A1:A3)'},
            B2 : {format: '0.00', formula: 'AVERAGE(A1:A3)'},
            B3 : {formula: 'LOG(A1)*(A2/A3)'},
            B4 : {formula: 'MAX(A1:A3)'}
        }
    });
</script>

<form id="calx_form">
    <input data-cell="B4">
</form>
<script>
    $('#calx_form').calx({
        data : {
            B1 : {value: '100'},
            B2 : {value: '200'},
            B3 : {formula: 'B1+B2'},
            B4 : {formula: 'B3^2'}
        }
    });
</script>

<!-- the only required dependency -->
<script src="jquery.min.js"></script>
<!-- required for number formatting only -->
<script src="numeral.min.js"></script>
<!-- the jquery calx lib -->
<script src="jquery-calx-2.2.7.min.js"></script>