javascript - Function hoisting in js -

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function mymethod(){   alert("global mymethod"); }  function mysecondmethod(){   alert("global mysecondmethod"); }  function hoisting(){   alert(typeof mymethod);   alert(typeof mysecondmethod);    mymethod();         // local mymethod   mysecondmethod(); // typeerror: undefined not function    // mymethod , implementation hoisted   function mymethod(){     alert("local mymethod");   }  // variable mysecondmethod get's hoisted var mysecondmethod = function() {     alert("local mysecondmethod");   }; } hoisting();

i not able understand how hoisting works in case , why alert("local mysecondmethod"); not shown. if can show me sequence helpful

inside hoisting function code gets reordered follows:

function hoisting(){   var mysecondmethod;    function mymethod(){     alert("local mymethod");     }    alert(typeof mymethod);   alert(typeof mysecondmethod);    mymethod();   mysecondmethod();     mysecondmethod = function() {     alert("local mysecondmethod");     }; }

here pretty obvious, create new variable mysecondmethod inside function's scope, overlays outside definition. @ point of call of function, however, not defined (yet) , errors.


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