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Javascript basic Interview Questions

Malyala Srinivas
08/06/2018 0 0
  1. Check below logical operators
      var a = false && 'Cat';  false
      var b = 'Cat' && 'Dog';   dog
      var c = 'Cat' || 'Dog';  cat
      var d = !true;   false
      var e = !false;   false
      what are  a,b,c,d,e values ?
  2. var a ? 'srinivas' : 'welcome' //Ternary/Conditional operator
      what is a value why this answer?

  3. var a=(12,13,14,15);
    what is a value ?

  4. What is spred operator ?

  5. What Multi-line string, Placeholders for variables?
  6. Var x,y,z=1; what is x,y,z values ?

  7. Var x, var y=null x==y  ?  true or false?

  8. What is console.trace(), console.dir();?

  9. What is a constructor?

         10 Give me an example of prototype inheritance?

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