Question

I have this JQuery / Javascript block of code to filter my list by search terms. It’s very long and looks a little unprofessional. Is there a way I could simplify it ?

Like with something “.contains()” ?

If someone could point me in the right direction I’d greatly appreciate it. Thanks !

Heres the code ; Ask me if you need more :

 $.each(catalog.products,
      function(index, value) {

          if ((filterValue == '' || filterValue == null)
                  || value.name.toUpperCase().indexOf(filterValue.toUpperCase()) != -1
                  || value.brand.toUpperCase().indexOf(filterValue.toLocaleUpperCase()) != -1
                  || value.category.toUpperCase().indexOf(filterValue.toUpperCase()) != -1
                  || value.sport.toUpperCase().indexOf(filterValue.toUpperCase()) != -1)
          {
              items.push('<li id="' + index + '">' +
                      '<a data-identity="productId"  href="./details.page?productId=' + index + '" >' +
                      '<img class="ui-li-thumb" src="' + value.thumbnail + '"/>' +
                      '<p>' + value.brand + '</p>' +
                      '<h3>' + value.name + '</h3>' +
                      '<span class="ui-li-count">' + value.price + ' $</span></li>') +
              '</a>';
          }

      }
        );

Answer 1

A straightforward way to ‘simplify’ the code would be

  var filterUpper = !filterValue || filterValue.toUpperCase();
  var test = function(s) {return s.toUpperCase().indexOf(filterUpper) != -1};

  if (!filterValue || test(value.name) || test(value.brand) || test(value.category) || test(value.sport))   {
   ...