javascript array multidimension search index

Question

I have an array in javascript. I've been trying to search the index but it is very frustrating. There is an object inside an array, and inside the object have an array as a value.

This is what the source code looks like:

rows = [{"id":"id0","cell":["array1","array2"]},{"id":"id1","cell":["array3","array4"]}];

I've tried this:

var v = {cell:["array1","array2"]};
rows.indexOf(v)

And also have a radio button:

<input type="radio" name='array' value="array1, array2">

jQuery here:

var i = $("input:checked").val().split(',');
rows.indexOf(i)

which has an index result of -1

@ObsidianAge yes i use split() to make the value an array

faddi
– faddi

2017-10-19 20:59:04 +00:00
Commented Oct 19, 2017 at 20:59 — faddi
– faddi, Commented Oct 19, 2017 at 20:59

Joseph Cho · Accepted Answer · 2017-10-19 21:57:27Z

3

Try this. It's a functional approach that loops through each index in rows, and returns true if there's a match.

var rows = [{"id":"id0","cell":["array1","array2"]},{"id":"id1","cell":["array3","array4"]}];
var index = rows.findIndex(function(i) {
  return JSON.stringify(i.cell) == JSON.stringify(["array1","array2"])
});
console.log(index);

The output should return 0. The reason we need to convert both objects into JSON.strings is because of how javascripts handles the equality of two objects. You can read more about it here.

answered Oct 19, 2017 at 21:57

Joseph Cho

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2 Comments

Gabriele Petrioli Over a year ago

do keep in mind though the if the array was ["array2","array1"] it would not match.

faddi Over a year ago

how to call elemen of array cell foreach statement?

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