null created by ChrisLis - https://repl.it/HaLe/31

HaLe-31.js

// Write a function that takes a string in and returns true if the letter
// "z" appears within three letters **after** an "a". You may assume
// that the string contains only lowercase letters.
//
// Difficulty: medium.

function nearby_az(string) {
   var str=string
    var tb=[]
    for(var i in str)
    {
        tb.push(str[i])
    }
    for(var i in tb)
    {
        if(tb[i]=='z')
        {
            var tb_temp=tb.slice(0,i);
            if(tb_temp.length<=3 && (tb_temp.includes('a')))
            {
               return true
               break;
            }
            else
                return false
                break;
        }

    }
    if(!(tb.includes('z')))
    {
      return false
    }
}

// These are tests to check that your code is working. After writing
// your solution, they should all print true.

console.log("\nTests for //nearby_az")
console.log("===============================================")
    console.log('nearby_az("baz") === true: ' + (nearby_az('baz') === true))
    console.log('nearby_az("abz") === true: ' + (nearby_az('abz') === true))
    console.log('nearby_az("abcz") === true: ' + (nearby_az('abcz') === true))
    console.log('nearby_az("a") === false: ' + (nearby_az('a') === false))
    console.log('nearby_az("z") === false: ' + (nearby_az('z') === false))
    console.log('nearby_az("za") === false: ' + (nearby_az('za') === false))
console.log("===============================================")