javascript - Using && as a replacement for IF statement -


I found the following snippet when digging through some code: 

  "string" ! = myVar type & amp; Amp; (MyVar = "");   
 I understand what happens here. If myVar is not a string, then the first condition is true, the second condition is evaluated, so that my veril can be set to "". Therefore it is essentially the replacement for the following:  
  if ("string"! = MyVar type) myVar = ""; The only obvious difference is that there is a return statement even before two strategies, although I found that the code is not using the returned value. So I am thinking:  
     
  1.  Is there any strategy or strategy?  
  2.  If the only supporters for the first strategy have the ability to return a value, then snippets are considered bad programming because it is more difficult to read?    
     
     
     Just to indicate, less obvious use of this idiom is more obvious .  
      "string"! = Type myvar & amp; Amp; (myVar = "");   
     I have read it and actually had to change it in my head / if. Steve McConnell argued that there should be a line of code per work, with which I agree and whose condemnation it is. Also keep in mind that the embedded side effects are dangerous at first place, that's great.  
      parameter = parameter || {}; Var speed = parameter.p speed || 60;   
     IMO is a very clear use, partly because it is a well established idiom or  
      if (X & x.employer.company === 'google')   
     Clear use of idioms (for example, if you do  undefined.company  You will get an exception).

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