Adding 1 to a variable

how do i add a number to a variable?? for example i have document.write(" = " + passedData[o]+"<br />"); and i want to add 1 to passedData[o] so that if passedData[o] was equal to 1 the new number would be 2



this is what i have right now:
document.write(" = " + passedData[o]+(+1)+"<br />");

but that gives me 1+1= 11 instead of 1+1= 2

Try this:
document.write(" = " + (passedData[o]+1)+"<br />");

.....Willy

thx for the reply....but unfortianately i still get the same result :(

also btw, the variable does have a numerical value....just to clear that up

are you really sure that passedData[o] contains a number? But wait, is that a letter o or zero -- passedData[o]?

Does this simple code work for you?
var x=2;
alert('--'+(x+1)+'--'). //should alert --3--