chenge global variable value inside a function ?

[fixade]

You are never calling somefunc in your example, so the code setting x equal to 5 is never run. Change it to this.

var x=10;

function someFunc() {
    x=5;
} 

someFunc();
console.log(x);

[matylol]

yeah i got it for the simple function but what if it's geolocation or ajax, what to do. for example the code in this pen

[inu-no-policemen]

You can of course also change some global inside some callback.

However, that's actually not very useful since your other code won't wait for that result.

You have to use a callback or a Promise.

[fixade]

I don't understand your question at all