5 random numbers, first number not zero [duplicate]

This question already has an answer here:

• Generating random whole numbers in JavaScript in a specific range? 24 answers
• Generate random number between two numbers in JavaScript 17 answers

I have a code which produces 5 unique random numbers between 0-9. However I don't want the first number to be zero.

How do I solve this?

var arr = []
while(arr.length < 5){
    var randomnumber = Math.floor(Math.random()*10);
    if(arr.indexOf(randomnumber) > -1) continue;
    arr[arr.length] = randomnumber;
}
document.write(arr);