試圖乘以一個值

Question

我有一個對象，給了我一個非常小的值，我想乘以一個數字來查看對象在X軸上的更大變化。

var y = 10; 

function initialize() 
{ 

} 

function On_finger1() 
{ 

var positionArray = finger1.value.toArray(); 

// x y z = index0 index1 index2 

// variable called currentZ which has taken the 3rd value 
var currentX = positionArray[0]; 

currentX = y * 1000; 

} 

我正在捕獲數組中的值，但它似乎沒有進入對象。

Answer 1

如果要更新數組中的索引，則需要更新數組的索引。

var currentX = positionArray[0]; //<--just getting the data that is in that index, it is not a pointer. 

currentX = y * 1000; //<--just overridding what was in the varaiable 

我想你要的只是

positionArray[0] = y * 1000;