Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
177 views
in Technique[技术] by (71.8m points)

javascript - Access overridden global variable inside a function

I want to access global variable 'x' when it is over-ridden by same named variable inside a function.

function outer() {
   var x = 10;
   function overRideX() {
      var x = "Updated";
      console.log(x);
   };

  overRideX();
}

outer();

Jsbin : Fiddle to Test

I don't want to rename the inner 'x' variable to something else. Is this possible ?

Edit: Edited question after abeisgreat answer.

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

You can use window.x to reference the globally scoped variable.

var x = 10;
function overRideX() {
  var x = "Updated";
  console.log(x);
  console.log(window.x);
};

overRideX();

This code logs "Updated" then 10.


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...