cf-form-init.js

jQuery(document).on('cf.form.init', function (event, data) {
    /**
     The object in the variable data has the following keys:
     
         //idAttr - The form's ID attribute
         idAttr: form_id,
         //formId - The forms's ID
         formId: formId,
         //state -the form's state object
         state: state,
         //fieldIds the ids of all field
         fieldIds: CFFIELD_CONFIG[instance].fields.hasOwnProperty('ids') ? CFFIELD_CONFIG[instance].fields.ids : []
     */
    console.log(data.fieldIds);
});

cf-state-on-submit.js

jQuery( document ).on( 'cf.form.submit', function (event, data ) {
    //data.$form is a jQuery object for the form that just submitted.
    var $form = data.$form;

    //get the form that is submiting's ID attribute
    var formId = $form.attr('id');
    if ( window.cfstate.hasOwnProperty( formId ) ) {
        var state = window.cfstate[formId];
        //log a field's value
        console.log(state.getState('fld_6009157_1'));
    }
});

field-math.js

jQuery(document).on('cf.form.init', function (event, data) {

    //IMPORTANT: Change this to your form ID
    if ('CF5a5691fadcf80' === data.formId) {

        //get state
        var state = data.state;

        //disable the field to show programmatically created value.
        //IMPORTANT- Change "fld_7788423_1" to the ID of the field you want to be changed by this code
        jQuery( '#fld_7788423_1' ).prop( 'disabled' );

        /** When a field changes, use it's value to set the value of another field **/
        //IMPORTANT - Change "fld_5986742_1" to the ID of the field you want to use the value from
        state.events().subscribe('fld_5986742_1', function (value, fieldId) {
            //Change the value of another field to this field's new value plus 7 percent
            //IMPORTANT- Change "fld_7788423_1" to the ID of the field you want to set
            var newValue = value * 1.07;
            //change state
            state.mutateState('fld_7788423_1', newValue);
            //update field -- NOTE: This will not be necessary in future versions of Caldera Forms
            jQuery('#fld_7788423_1').val(newValue);
        });

        console.log(data);

    }


});

get-cf-state.js

var state = window.cfstate['CF12345678_1'];

report-field-focus-to-google.js

jQuery(document).on('cf.form.init', function (event, data) {
    //get state
    var state = data.state;


    //create callback function to record field as being focused, by form and field ID
    var callback = function(fieldId,value){
        console.log(fieldId);
        //report field ID and (if you want value) to Google Analytics
        ga('send', {
            hitType: 'form',
            eventCategory: data.formId,
            eventAction: 'focus',
            eventLabel: fieldId
        });
    };

    data.fieldIds.forEach( function(fieldId){
        state.events().subscribe(fieldId,callback)
    });

    //report form loaded
    ga('send', {
        hitType: 'form',
        eventCategory: data.formId,
        eventAction: 'load',
    });
    

});

I suspect line 16 of field-math.js has its attributes inverted:

state.events().subscribe('fld_5986742_1', function (value, fieldId) {
should be
state.events().subscribe('fld_5986742_1', function (fieldId, value) {

Right?