Combining Two Javascript from Matrix table vs. Side by Side

Hi!  I’m not very knowledgeable about Javascript, so I’m looking for some help.  I have two scripts I’m trying to combine. 

The first image is the script for inserting slashes to make answers appear as dates (00/00/000).  It is formatted for a side-by-side survey question.

The second is to hide lines but have an Add button so the respondent can add lines in a Matrix table as needed.  

Both of them work fine on their own, but when I try and combine them they don’t both work.  I’m not sure if it’s because the first is formatted for Side-by-Side and the second for a Matrix table and there’s something in the code that is specific for those types of tables, or if there is a problem with variable names?  

Thanks for any recommendations you can make!

~Rebekah

Here is my attempt at combining the two, but I know it doesn’t work:

Qualtrics.SurveyEngine.addOnload(function()
{
    jQuery("#"+this.questionId+" tr.ChoiceRow:not(:lt(1))").hide();

});
Qualtrics.SurveyEngine.addOnReady(function(){

jQuery("#" + this.questionId + " .InputText").each(function() {
        new Cleave(jQuery(this), {
            date: true,
            delimiter: '/',
            datePattern: ['m', 'd', 'Y']
var that=this.questionId;
jQuery("#"+this.questionId+"tr.ChoiceRow:not(:lt(1))").hide();
jQuery("<input type='button' id='add' value='Add Deployment' name='+' />").insertAfter("#"+this.questionId+" tr.ChoiceRow:last");
jQuery("#add").on('click',function(){
    var c= jQuery("tr.ChoiceRow:visible").length;
jQuery("#"+that+" tr.ChoiceRow:eq("+c+")").show();
    });
});

Qualtrics.SurveyEngine.addOnUnload(function(){
    /* Place your JavaScript here to run when the page is unloaded */
});