Standard Expression

Example 1:

Property: position Description: Sets the X and Y to 100

//sets the x position
var x = 100;
//sets the y position
var y = 100;
[x,y]

Example 2:

Property: scale Description: times the scale by the comp time

//gets the comp time
var compTime = time;
//set the scale value
var scale = 100;
//times scale by time
var scaleMath = scale*compTime;
[scaleMath,scaleMath]

Example 3:

Property: rotation Description: rotate based on x position to comp

//get comp width
var compWidth = thisComp.width;
//get x position
var xPos = thisLayer.transform.position[0];
//set start rotation
var startRot = 0;
//set end rotation
var endRot = 360;
//rotate bewteen start and end based on comp X
linear(xPos, 0, compWidth, startRot, endRot)