Filter Array and Remove Item if Undefined

Question

The array contains Items made up of a string and some variables. If one of the variables is undefined I would like to filter the whole item out of the Array. Example below.

Full Array:

[ 'hello', 'hi undefined', 'good day' ]

Filtered Array:

[ 'hello', 'good day' ]

Array Code:

  const testArray = [
            'hello',
            'hi ' + variableX, //variableX is undefined
            'good day'];

Hassan Imam · Accepted Answer · 2018-04-10 10:55:50Z

1

You can use string#includes to check if a word exists in another word or sentence.

const arr = [ 'hello', 'hi undefined', 'good day' ],
      result = arr.filter(word => !word.includes('undefined'));
console.log(result);

answered Apr 10, 2018 at 10:55

Hassan Imam

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