Question

145

Loop check if on last iteration?

rated 0 times [ 149] [ 4] / answers: 1 / hits: 33949 / 11 Years ago, tue, june 25, 2013, 12:00:00

How do I check if I'm on the last iteration of this loop? I'm sorry for asking this question. I'm used to programming in VB.NET and javascript seems very cryptic by nature.

if (QuerySplit.length > 1) {

   var NewQuery

   for (i=0; i<QuerySplit.length; i++)

   {

       // if we're not on the last iteration then

       if (i != QuerySplit.length) {

           // build the new query

           NewQuery = QuerySplit[i].value +  AND 

       }

    }

}

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lara

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answered 11 Years ago monica · Accepted Answer

Take note that you need var NewQuery = ; and check for length - 1. Also, the last if statement is just a guess of what you probably want to do:

if (QuerySplit.length > 1) {

  var NewQuery = ;

  for (i = 0; i < QuerySplit.length; i++) {

    // if we're not on the last iteration then

    if (i != QuerySplit.length - 1) {

      // build the new query

      NewQuery += QuerySplit[i].value +  AND 

    } else {

      NewQuery += QuerySplit[i].value;

    }

  }

}

If QuerySplit.length is 4, then:

0, 1, 2, 3

...are the indexes. So you want to check for when the index is 3 and that's your last iteration.