链接双等于==返回false [英] chaining double equals == returns false

问题描述

我有3个文本框，我试图对所有3个值都匹配进行验证.我有一个简单的功能:

 函数DidSubsriberSignatureMatch(){返回tbNameOfSubscriber.GetText()== tbSubscriberSig1.GetText()== tbSubscriberReEnter.GetText();} 

我逐步调试了调试器，并且看来至少在Chrome的Javascript中，"a" =="a"返回true，但是"a" =="a" =="a"返回false.

为什么?

解决方案

也许来自Python?大多数语言实际上没有比较链.尝试它会产生废话.

I have 3 textboxes that I am trying to do some validation that all 3 values match. I have a simple function:

    function DoesSubsriberSignatureMatch() {
    return tbNameOfSubscriber.GetText() == tbSubscriberSig1.GetText() == tbSubscriberReEnter.GetText();
}

I stepped through with the debugger, and it seems in Javascript in Chrome at least, "a"=="a" returns true, but "a"=="a"=="a" returns false.

Why?

解决方案

Coming from Python, perhaps? Most languages don't actually have comparison chaining. Trying it produces nonsense results.

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