if-statement - 简化复杂的 if 语句

Question

我有一个值矩阵，需要对其进行检查以在页面上显示不同的内容。变量 valueA 和 valueB 每个都至少有 3 个可能的状态。下面的代码工作正常，但我想知道是否有更好/更智能的方法来处理这个问题。谢谢!

<cfif valueA EQ -1 AND valueB EQ -1>
    <!--- Do something --->
<cfelseif valueA EQ -1 AND valueB EQ 0>
    <!--- Do something --->
<cfelseif valueA EQ -1 AND valueB EQ 1>
    <!--- Do something --->
<cfelseif valueA EQ -1 AND valueB GT 1>
    <!--- Do something --->
<cfelseif valueA EQ 0 AND valueB EQ -1>
    <!--- Do something --->
<cfelseif valueA EQ 0 AND valueB EQ 0>
    <!--- Do something --->
<cfelseif valueA EQ 0 AND valueB EQ 1>
    <!--- Do something --->
<cfelseif valueA EQ 0 AND valueB GT 1>
    <!--- Do something --->
<cfelseif valueA EQ 1 AND valueB EQ -1>
    <!--- Do something --->
<cfelseif valueA EQ 1 AND valueB EQ 0>
    <!--- Do something --->
<cfelseif valueA EQ 1 AND valueB EQ 1>
    <!--- Do something --->
<cfelseif valueA EQ 1 AND valueB GT 1>
    <!--- Do something --->
<cfelseif valueA GT 1 AND valueB EQ -1>
    <!--- Do something --->
<cfelseif valueA GT 1 AND valueB EQ 0>
    <!--- Do something --->
<cfelseif valueA GT 1 AND valueB EQ 1>
    <!--- Do something --->
<cfelseif valueA GT 1 AND valueB GT 1>
    <!--- Do something --->
</cfif> 

Answer 1

ColdFusion 引擎不会看到上面代码中的复杂性。人类开发者将会遇到一些困难(尽管我确信有些人可以毫无问题地解析它，(不是我))。

这是我的版本，使用编辑器的代码折叠，它更容易阅读，至少对我来说。

<cfif valueA EQ -1>

    <cfif valueB EQ -1>
        <!--- Do something --->
    <cfelseif valueB EQ 0>
        <!--- Do something --->
    <cfelseif valueB EQ 1>
        <!--- Do something --->
    <cfelseif valueB GT 1>
        <!--- Do something --->
    </cfif>    

<cfelseif valueA EQ 0>

    <cfif valueB EQ -1>
        <!--- Do something --->
    <cfelseif valueB EQ 0>
        <!--- Do something --->
    <cfelseif valueB EQ 1>
        <!--- Do something --->
    <cfelseif valueB GT 1>
        <!--- Do something --->
    </cfif> 

<cfelseif valueA EQ 1>

    <cfif valueB EQ -1>
        <!--- Do something --->
    <cfelseif valueB EQ 0>
        <!--- Do something --->
    <cfelseif valueB EQ 1>
        <!--- Do something --->
    <cfelseif valueB GT 1>
        <!--- Do something --->
    </cfif> 

<cfelseif valueA GT 1>

    <cfif valueB EQ -1>
        <!--- Do something --->
    <cfelseif valueB EQ 0>
        <!--- Do something --->
    <cfelseif valueB EQ 1>
        <!--- Do something --->
    <cfelseif valueB GT 1>
        <!--- Do something --->
    </cfif> 

</cfif>

---

希望对您有所帮助。