How can I get the index of an object by its property in JavaScript?

Since the sort part is already answered. I'm just going to propose another elegant way to get the indexOf of a property in your array

Your example is:

var Data = [
    {id_list:1, name:'Nick', token:'312312'},
    {id_list:2, name:'John', token:'123123'}
]

You can do:

var index = Data.map(function(e) { return e.name; }).indexOf('Nick');

var Data = [{
    id_list: 1,
    name: 'Nick',
    token: '312312'
  },
  {
    id_list: 2,
    name: 'John',
    token: '123123'
  }
]
var index = Data.map(function(e) {
  return e.name;
}).indexOf('Nick');
console.log(index)

Array.prototype.map is not available on Internet Explorer 7 or Internet Explorer 8. ES5 Compatibility

And here it is with ES6 and arrow syntax, which is even simpler:

const index = Data.map(e => e.name).indexOf('Nick');

If you're fine with using ES6, arrays now have the findIndex function. Which means you can do something like this:

const index = Data.findIndex(item => item.name === 'John');