我有一个对象数组(特别是 easelJS 图像) - 像这样:

var imageArray = new Array;
gShape  = new createjs.Shape();
// shape is something
imageArray.push(gShape);

gShape.addEventListener("click", function() {alert"stuff"});

imageArray[index].addEventListener("click", function(){
    alert " you clicked region number " + index}

最佳答案

当然。您可以只使用闭包来保存该迭代的索引。否则有由相同的函数范围共享并且会给你相同迭代的值。为每个函数创建一个单独的函数将保存函数内部的状态。

var imageArray = new Array;
gShape = new createjs.Shape();
 // shape is something
 imageArray.push(gShape); // Dumped all the objects

for (var i = 0; i < imageArray.length; i++) {
   (function(index) {
        imageArray[index].addEventListener("click", function() {
           console.log("you clicked region number " + index);
         })
   })(i);
}

 for(var i = 0; i < imageArray.length; i++) {
       imageArray[i].addEventListener("click", bindClick(i));
 }

 function bindClick(i) {
    return function() {
        console.log("you clicked region number " + i);
    };
 }

let imageArray = [];
gShape = new createjs.Shape();
// shape is something
imageArray.push(gShape); // Dumped all the objects

for (let i = 0; i < imageArray.length; i++) {
  imageArray[i].addEventListener("click", function() {
    console.log("you clicked region number " + i);
  });
}

https://stackoverflow.com/questions/17981437/