How to convert string as object's field name in javascript

Question

I have a js object like:

obj = {
  name: \'js\',
  age: 20
};

now i want to access name field of obj, but i can only get string \'name\', s

Answer 1

It's quite simple, to access an object's value via a variable, you use square brackets:

var property = 'name';
var obj = {name: 'js'};
alert(obj[property]); // pops 'js'