Cant use math addition on two variables.

[UrbanDweller]

Hey,

 

I have two variables which both hold different integer values that i would like to use addition on and make the answer into a new variable but due to js function that adds variables together with a + I cant seem to to use math addition on the two variables.

 

Note: One variable is an array but in previous function subtraction worked fine in same situation

 

Below is the snippet of the code that wont work.

 

Thanks team

 

function OnMouseDown(e){
imgDivPos = new imagePosition(imgDiv);
mCurrentX = e.pageX + imgDivPos[0];
mCurrentY = e.pageY + imgDivPos[1];
alert(mCurrentY);
    cropDiv.onmousemove = OnMouseMove;	

}

function imagePosition(param){
var x=0, y=0;
x = param.offsetLeft;
y = param.offsetTop;
this[0] = x;
this[1] = y;
}

[trq]

Where have you defined imgDiv?

[UrbanDweller]

Thanks for the reply,

 

All the variables have been called globally just to reduce clutter, but imgDiv is the name of the div i want to get the mouse xy position.

[rythemton]

Subtract works fine because subtract only works on numbers, so JavaScript turns the values into numbers before subtracting. Unfortunately, Addition works as concatenate as well as addition, so if one variable is text (it may only do this if the first variable is text, but I'm not sure), it will convert both to text and concatenate them. Try using the parseInt() function to force both numbers to be Ints before adding them.

[UrbanDweller]

Try using the parseInt() function to force both numbers to be Ints before adding them.

 

worked like a charm, thanks for that