How JavaScript uses variables to set the object's key name/

{Thetop:10} is a valid object literal. The code would create an object withA property named Thetop that have a value of 10. Both The following is the Same:obj= {Thetop:10};obj= {"Thetop": 10};in ES5 and earlier, you cannot use a variable as a property name inside an object literal. Your only option was to DoThe following:varthetop = "Top";//create the object literalvarAniargs = {};//Assign the variable property name with a value ofAniargs[thetop] = 10; ES6 defines Computedpropertyname as part of the grammar forObject literals, which allows you-write the code like This:varthetop = "Top", obj= {[Thetop]: 10};console.log (obj.top); //- TenChrome test: ES5

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How JavaScript uses variables to set the object's key name/