动态变量名语法 [英] Dynamic variable name syntax

问题描述

另一个新手问题使我陷入困境.

Another newbie question that has me stuck badly.

我有三个变量

var state1
var state2
var state3

我需要在.click事件中访问其中之一，具体取决于被单击对象的属性.

I need to access one of them on a .click event depending on a property of the clicked object.

如何访问正确的变量?基本上，我需要通过将状态"和正确的数字加在一起来获得变量名.

How do I access the correct variable? Basically I need to for the variable name by adding "state" and the correct number together.

如果有需要，我会尽快通过一些代码更新此帖子.

I will update this post soon with some code in case it's needed.

var backstate1;
var backstate2;
var backstate3;
var currentFrame;

function hotspotHover(){
var currentElement = this;
var daName =this.name;
$("#hotspot" +daName).hover(

    function() { 
    $("img.changeOutline").prop("src", currentElement.outlinesArray[currentFrame]);
    $("#outlines").show(); 
    }, 
    function() { 
    $("#outlines").hide(); 
    }
).click(function() {
    var backstateLevelNumber = currentElement.backStateLevel; //not working
    window['backstate'+ backstateLevelNumber]=currentFrame; //trying to set backstate+number to current frame variable
    hoverClick(currentElement.defaultFrame);
    checkReverse();
    checkSeqLoop();
});

};

推荐答案

使用数组可以解决您的问题:

Using an array would solve your problem:

var states = [null, null, null];

访问它们的方式将是:(假设currentStateId是当前状态号)

Accessing them would then be: (Assuming currentStateId being the current state number)

var currentState = state[currentStateId] //Access state

并进行设置:

states[currentStateId] = "State"; //Set State

这篇关于动态变量名语法的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！