What’s new in Angular v5: Animations

Angular version 5 is here and with her a new wave of features. In this article, I want to explore what’s new in animations.

Negative limits in query

Animation queries now support negative limits, in which case will be matching elements from the end rather than from the beginning.

For Example:

animations: [
  trigger(
    'query', [
      transition(
        '* => start', [
          query('.item', [style({
            opacity: 0
          }), animate('2s', style({
            opacity: 1
          }))], {
            limit: -3
          }),
        ]),
    ]),
]

Improved disabled property

The @.disabled property now work without an expression. When the expression is missing it will treat the property as true.

For example:

// Animation will be disabled
<div @.disabled>
  <div [@animate]="expression">Animate</div>
</div>

Better error handling

Angular now throws an error when invalid CSS property is used in the animation.

For example:

style({opacity: 0, tranforn: 'translateX(0)'})

Will throw:

console

New aliases

Support for :increment and :decrement transition aliases. In addition to the :enter and :leave transition aliases, the :increment and :decrement aliases can be used to kick off a transition when a numeric value has increased or decreased in value.

For example:

animations: [
  trigger('slider', [
    transition(":increment", group([
      query(':enter', [
        style({
          left: '100%'
        }),
        animate('0.5s ease-out', style('*'))
      ]),
      query(':leave', [
        animate('0.5s ease-out', style({
          left: '-100%'
        }))
      ])
    ])),
    transition(":decrement", group([
      query(':enter', [
        style({
          left: '-100%'
        }),
        animate('0.5s ease-out', style('*'))
      ]),
      query(':leave', [
        animate('0.5s ease-out', style({
          left: '100%'
        }))
      ])
    ]))
  ])
]

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