object-update

object-update

Update a deep nested object with path, return the origin object if not change.

Installation

Just use npm to install it. If you want to use it in frontend, use can use webpack or browserify to bundle it to your codebase

npm install object-update

How to use

var update = require('object-update')
var obj = {
  foo: 'bar',
  nest: {
    cat: 'moew'
  },
  arr: [ 0, 1, 2 ]
}

var newObject = update(obj, {
  'foo': 'barrr',
  'arr.1': 100, // support array
  'nest.cat': { kitty: 'lol' }
})

console.log(newObject)
// {
//   foo: 'barrr',
//   nest: {
//     cat: { kitty: 'lol' }
//   },
//   arr: [ 0, 100, 2 ]
// }
//

It is very appreciate to do PureRender if you are using React.js like this:

{
  handleClick () {
    const newObj = update(this.state.todos, {
      '1.text': 'new text'
    })

    this.setState(newObj)
  }

  shouldComponentUpdate (nextProps, nextState) {
    // pure render
    return !shallowEqual(this.props, nextProps) ||
           !shallowEqual(this.state, nextState)
  }
}

For more use case, check the lnode.spec.js in test folder.