jquery - How to change the value of variable in a function in javascript? -

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var e = 15;  function change_value(e){      e = 10; }  change_value(e);  console.log(e);

the value of e still 15.

the e inside function scope different e inside global scope.

just remove function parameter:

var e = 15;  function change_value(){     e = 10; }  change_value(); console.log(e);

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