Simple IF Not validating

[notflip]

For some reason my code fails to draw when i add this into the code. is anything wrong ? thanks

for (i = 0; i < radios.length+1; i++){
		if(radios[i].checked){
			question1 = radios[i].value;
			}
		}

		data = [question1,2,2,2,2,2,2];
		drawGraph();

[JMRKER]

For some reason my code fails to draw when i add this into the code. is anything wrong ? thanks

for (i = 0; i < radios.length+1; i++){
		if(radios[i].checked){
			question1 = radios[i].value;
			}
		}

		data = [question1,2,2,2,2,2,2];
		drawGraph();

Lots of things wrong, like where is the rest of the code?
For example:
1. What are the values of the radio buttons?
2. Where is 'question1' defined to receive the value of the radio button?
3. What does the 'data[]' array represent?
4. What does 'drawGraph()' do? Especially in relationship to the radio button selection?
5. Where is 'question1' used in the for...loop?

So many questions, so little time ...

[Logic Ali]

i < radios.length+1

What are you expecting to find 2 elements past the end of the array?

That code must generate errors in the console.

[JMRKER]

What are you expecting to find 2 elements past the end of the array?

That code must generate errors in the console.

#6. That too.