How to use a var as a frequency with simpletones?

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I would like to be able to take a user inputted number:

HTML

<input type = "number" id = "bets" min = "0" max = "42" value = "6">

And use that as the frequency for playTone() using simpleTones.js:

JavaScript

var bets = document.getElementById("bets"); 
playTone(bets.value, "sine", 6)

What I have tried:

I've tried playing around with some of the simpleTones code to see if I can change the way it behaves but as a js beginner I'm not really sure to start. For reference, here is a snippet of the source I thought might be relevant:

JavaScript

playTone = (frequency, type, duration) => {
	if (type === undefined) {
		type = "sine";
	}
	if (duration === undefined) {
		duration = 1.3;
	}
	if (frequency === undefined) {
		frequency = 440;
	}

Posted 19-May-18 11:35am

Member 13835151

Updated 19-May-18 11:52am

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Member 13835151 · Accepted Answer · 2018-05-19T11:53:00

Solution 1

Figured it out using parseInt!

function playBets() { 

		var bets = document.getElementById("bets"); 
		bets = parseInt(bets.value) + 440; 

		playTone(440, "sine", 6)
		playTone(parseInt(bets), "sine", 6)

	}

Posted 19-May-18 11:53am

Member 13835151