Get the latest iteration in jquery every

Question

I have the following code that I look at in the columns of tables, and if its last column I want it to do something else. Now it is hardcoded, but how can I change it so that it automatically recognizes its last column

$(this).find('td').each(function (i) { if(i > 0) //this one is fine..first column { if(i < 4) // hard coded..I want this to change { storageVAR += $(this).find('.'+classTD).val()+','; } else { storageVAR += $(this).find('.'+classTD).val(); } } }); 

Answer 1

If you want to access the length inside the .each() callback, you just need to get the length in advance so that it is available in your area.

 var cells = $(this).find('td'); var length = cells.length; cells.each(function(i) { // you can refer to length now }); 

Answer 2

It sounds like your goal is to make a list of values ​​separated by commas, why don't you collect the values ​​and use the 'join' array method?

 var values = [] $(this).find('td .' + classTD).each(function(i) { if (i > 0) values.push($(this).val()); }); storageVAR = values.join(','); 

Answer 3

Something like this should do this:

 var $this = $(this), size = $this.size(); $this.find('td').each(function (index) { // FIRST if(index == 0) { } // LAST else if(index == size) { } // ALL THE OTHERS else { } }); 

Answer 4

If all you want is the last column, you can use

 $(this).find('td:last') 

If you want to do something with other columns, go to

 $(this).find('td:last').addClass("last"); $(this).find('td').each(function() { if ($(this).hasClass("last")) { // this is the last column } else { // this isn't the last column } }); 

You can use data() instead of addclass() if you like it.

If everything you want to do does not have a comma at the end of the line, you can simply turn it off after:

 storageVAR = storageVAR.substr(0, (storageVAR.length - 1);