Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
196 views
in Technique[技术] by (71.8m points)

javascript - getting message condition is always true

I'm getting message from resharper as condition is always true for following code

if (filters == "answers" || "solution") {

}

what's happening here in this code?

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)
if (filters == "answers" || "solution") {

}

In the above code "solution" is true always

So, Change to this

  if (filters == "answers" || filters =="solution") {

    }

Example

If("i")
{

}

Above is true always.

So, In your code the second condition returns TRUE always

As per the Boolean OR , [Anything with TRUE] is always TRUE

You have two predicates , So your truth table will be

   i/p               o/p
TRUE   FALSE        True
FALSE  TURE         True
FALSE  FALSE         False
TRUE   TRUE         True

in your code, You will never get the condition #1 and #3 so, It will be true always

so your code will be true always


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...