Question

188

rated 0 times [ 193] [ 5] / answers: 1 / hits: 167989 / 8 Years ago, mon, july 4, 2016, 12:00:00

I have this:

map = ranks.map((row, r) => (

  row.map((rank, i) => {

    return [element(r, i, state, rank, toggled, onClick)];

  })

));

It maps through a 2-dimentional array.
After each row, I'd like to insert <div class=clearfix></div>.

I think, if I could somehow get the last index for each row, so I will be able to use it in the row map callback. Can someone show me how to do it?

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Total Points: 517

Total Questions: 110

Total Answers: 104

Location: New Caledonia

Member since Fri, Sep 11, 2020

4 Years ago

answered 8 Years ago travion · Accepted Answer

Try something like:

row.map((rank, i, row) => {

  if (i + 1 === row.length) {

    // Last one.

  } else {

    // Not last one.

  }

})

Old answer:

const rowLen = row.length;

row.map((rank, i) => {

  if (rowLen === i + 1) {

    // last one

  } else {

    // not last one

  }

})