javascript - How to get the variable value in the variable in the function from the outside

Question

How to get the variable value inside the function from outside the function? {code...}

PHP中文网 · Answer

Define global variables, write variable declarations outside the function, and use them directly inside the function

var data;
function time(){
    data="2017";
}
alert(data)

世界只因有你 · Answer

Just return it and it will be fine

给我你的怀抱 · Answer

It is recommended that the questioner read the relevant knowledge about the scope of variables, which may be of great help.

怪我咯 · Answer

localStorage

phpcn_u1582 · Answer

var time = function(){
    this._date = '2017';
}
var fn = new time;
console.info(fn._date);