JSFiddle - React, Tailwind, and code Playground

by javiros

HTML

<body>
    <h1>Prime number checker</h1>
    <div class="col-lg-2">
        <form>
            <div class="form-group">
                <label>Enter a number</label>
                <input class="form-control" id="inputNumber"></input>
            </div>
            <button type="submit" class="btn btn-info btn-sm" id="button">Check</button>
        </form>
    </div>
</body>

CoffeeScript

$('#button').click (evt) ->
    num = parseInt($('#inputNumber').val())
    i = 1
    numsArray = []
    while i < num + 1
      numsArray.push(i)
      i++
    numsArray.shift()
    noPrimes = []
    primes = []
    counter = 2
    while counter < numsArray.length + 2 
        n = counter
        n = n + 2
        if numsArray.indexOf(n) == n
            numsArray.indexOf(n) = 0
            console.log numsArray
        counter++