多个三元运算符 [英] Multiple Ternary Operators

问题描述

我需要一个三元运算符的语法帮助，这将帮助我将正确的标记图标放到我的好地图上。我有三个区域0,1和2，它们具有唯一的图标0,1和2。 / p>

我曾经只有两个区域，所以这个三元运算符工作正常;

  icon :(区域== 1）？ icon1：icon0，
  

现在我需要为area2添加一个额外的第三个图标（icon2）。

我尝试了各种方法，但似乎无法做到正确。

解决方案

语法如下：

  icon :( area == 1）？ icon1 :(区域== 2）？ icon2：icon0，
  

但这开始变得复杂。你可能最好只创建一个函数来代替这个工作：

  icon：getIcon（area），
 
 ... 
 
函数getIcon（区域）{
 if（area == 1）{
 return icon1; 
}否则if（area == 2）{
 return icon2; 
} 
 
返回icon0; 
} 
  

I need a bit of syntax help with a ternary operator which will help me to put the correct marker icons on to my good map.I have three areas 0,1 and 2 which have unique icons 0, 1 and 2.

I used to have just two areas so this ternary operator worked fine;

icon: (area == 1) ? icon1: icon0,

Now I need to add an additional third icon (icon2) for area2.

I've tried various methods but just can't seem to get it right.

解决方案

The syntax would be:

icon: (area == 1) ? icon1 : (area == 2) ? icon2 : icon0,

But this is starting to get complicated. You may well be better off just creating a function to do this work instead:

icon: getIcon(area),

...

function getIcon(area) {
  if (area == 1) { 
    return icon1; 
  } else if (area == 2) { 
    return icon2; 
  }

  return icon0;
}

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