js-select

js-select

js-select uses js-traverse to traverse and modify JavaScript object nodes that match JSONSelect selectors:

var select = require("js-select");

var people = {
   george: {
      age : 35,
      movie: "Repo Man"
   },
   mary: {
      age: 15,
      movie: "Twilight"
   }
}

select(people, ".age").forEach(function(age) {
   this.update(age - 5);
})

select(people, ".age").nodes();  // [30, 10]

See js-traverse for all the things you can do to modify the node. The forEach() callback will get the same this context as the forEach() callback from js-traverse, plus a this.matches() which will test if the node matches a selector:

select(obj).forEach(function(node) {
   if (this.matches(".mary > .movie")) {
      this.update(node.toLowerCase());
   }
}

selectors

js-select supports the following JSONSelect selectors so far:

"*"
".key"
".ancestor .key"
".parent > .key"
":root"
":nth-child(n)"
":nth-child(even)"
":nth-child(odd)"
":first-child"

install

Download the code, then with npm:

npm install js-select

Get a browser file after npm-installing using browserify