I am trying to generate 40 random numbers between 0 to 8
This is my code --
<body>
<h1>This is a page for randomize number between 0 - 8 </h1> <br />
<button onclick="randomize()">Random number</button>
<p id="Output"></p>
<script>
function randomize() {
var arr = []
while(arr.length < 40){
var randomnumber=Math.floor((Math.random() * 8) + 1)
arr.push(randomnumber)
}
document.getElementById("Output").innerHTML = arr;
}
</script>
</body>
I am expecting 40 random numbers to be Output like --
4 4 5 7 8 1 5 7
What I am doing wrong can someone correct me please and also I want the result to be outputted by the next line !
Can someone help !
I am trying to generate 40 random numbers between 0 to 8
This is my code --
<body>
<h1>This is a page for randomize number between 0 - 8 </h1> <br />
<button onclick="randomize()">Random number</button>
<p id="Output"></p>
<script>
function randomize() {
var arr = []
while(arr.length < 40){
var randomnumber=Math.floor((Math.random() * 8) + 1)
arr.push(randomnumber)
}
document.getElementById("Output").innerHTML = arr;
}
</script>
</body>
I am expecting 40 random numbers to be Output like --
4 4 5 7 8 1 5 7
What I am doing wrong can someone correct me please and also I want the result to be outputted by the next line !
Can someone help !
Share Improve this question asked Feb 25, 2016 at 1:02 DanDan 3432 gold badges6 silver badges16 bronze badges 1- What does your code output at the moment? – Blue Boy Commented Feb 25, 2016 at 1:04
3 Answers
Reset to default 2Your code already works, just ad line breaks:
<body>
<h1>This is a page for randomize number between 0 - 8 </h1> <br />
<button onclick="randomize()">Random number</button>
<p id="Output"></p>
<script>
function randomize() {
var arr = []
while(arr.length < 40){
var randomnumber=Math.floor((Math.random() * 9)) // 0-8 is 9 numbers
arr.push(randomnumber)
}
document.getElementById("Output").innerHTML = arr.join('<br>'); // Add line break between numbers
}
</script>
</body>EDIT: changed random multiplier from 8 to 9
a) If you multiply by 8, you are getting numbers from 0 to 7.
b) .innerHTML = arr.join('<br>') should give you the output you want.
I think you need to look into your random calculation and use .join() to make the number in separate lines.
1) The random formulate should be Math.floor(Math.random()*(1+High-Low))+Low;. Since you multiply Math.random() with 8, you will only get 7 as maximum. However you're adding +1 after random, you will still get 8 as maximum number but the minimum bees 1. You're genearating 1 to 8 now.
2) If you need to echo each number in a new line, you need to join the array with <br/>. E.g. document.getElementIdBy('Output').innerHtml = arr.join('<br/>').