Can I start looping from the 3rd item, or any other item, in an array with the jquery $.each()and also with $(elem).each(). I want both examples. #tableau is the id of a <table> in HTML. See my code below:

var tableau = $('#tableau'), 
    tds = tableau.find('td'),
    tdLen = tds.length,
    superMarios = [
                    'Super Mario Bros', 
                    'Super Mario Bros 2', 
                    'Super Mario Bros 3', 
                    'Super Mario World',
                    'Super Mario World 2: Yoshi\'s Island',
                    'Super Mario Galaxy', 
                    'New Super Mario Bros Wii', 
                    'Super Mario Galaxy 2'
                 ],
    superMarioCollection = superMarios.length;

$.each(superMarios, function(i, val){
  console.log(i + ': ' + val);
  tds.eq(i).append(val);
});

Many Thanks

Can I start looping from the 3rd item, or any other item, in an array with the jquery $.each()and also with $(elem).each(). I want both examples. #tableau is the id of a <table> in HTML. See my code below:

var tableau = $('#tableau'), 
    tds = tableau.find('td'),
    tdLen = tds.length,
    superMarios = [
                    'Super Mario Bros', 
                    'Super Mario Bros 2', 
                    'Super Mario Bros 3', 
                    'Super Mario World',
                    'Super Mario World 2: Yoshi\'s Island',
                    'Super Mario Galaxy', 
                    'New Super Mario Bros Wii', 
                    'Super Mario Galaxy 2'
                 ],
    superMarioCollection = superMarios.length;

$.each(superMarios, function(i, val){
  console.log(i + ': ' + val);
  tds.eq(i).append(val);
});

Many Thanks

• javascript
• jquery
• html
• for-loop

3 Answers 3

You can't start from anything but 0 with $.each(), but you can prevent the code inside from running by using an if() statement.

$.each(superMarios, function(i, val){
  if( i >= 2 ) {
      console.log(i + ': ' + val);
      tds.eq(i).append(val);
  }
});

Or if you want to start on the third, but you want the indices to start with 0, then just take a .slice() of the Array, giving it the zero-based index where you want to begin.

$.each(superMarios.slice( 2 ), function(i, val){
  console.log(i + ': ' + val);
  tds.eq(i).append(val);
});

Or as an alternate to the first example, just offset the i the same amount as your starting point to give you the higher starting index:

var idx = 2;
$.each(superMarios.slice( idx ), function(i, val){
   console.log((i+idx) + ': ' + val);
   tds.eq(i+idx).append(val);
});

No.

Instead, you should use an ordinary for loop.

While you cannot tell $.each to start at a certain index, you can slice your array before passing it to $.each:

$.each(superMarios.slice(2), function(i, val){
  console.log(i + ': ' + val);
  tds.eq(i).append(val);
});

Note: slice will not effect your original array. Rather, it'll return a copy of a portion of your array.