jQuery $.inArray always returns -1

Question

I need your help,

I am try to match the keyword "BN to" but it appears that this is not working out for me, the result is always "-1". What am I doing wrong?

var yourArray = ["BNI to ALPHA", "BNI to BRAVO", "BNI to CHARLIE"]

var found = $.inArray('BNI to', yourArray)

alert(found)

}

You are searching for a member inside the array with a string like this "Bni to" and theres no member with that specific string. — ivan
– ivan, Commented Jan 18, 2016 at 20:58

Pointy · Accepted Answer · 2016-01-18 20:56:17Z

1

The $.inArray() function tells you where a given value can be found the array. Your string is not equal to any member of the array, so the return value is -1.

I think what you're looking for could be Array.prototype.findIndex:

var found = yourArray.findIndex(function(s) {
  return s.startsWith("BNI to");
});

The .findIndex() function is an ES2015 thing, and not supported by Internet Explorer yet (according to MDN). There's a Polyfill to use however.

answered Jan 18, 2016 at 20:56

Pointy

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