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Contents
/**
@module @ember/utils
*/
/**
Compares two objects, returning true if they are equal.
```javascript
import { isEqual } from '@ember/utils';
isEqual('hello', 'hello'); // true
isEqual(1, 2); // false
```
`isEqual` is a more specific comparison than a triple equal comparison.
It will call the `isEqual` instance method on the objects being
compared, allowing finer control over when objects should be considered
equal to each other.
```javascript
import { isEqual } from '@ember/utils';
import EmberObject from '@ember/object';
let Person = EmberObject.extend({
isEqual(other) { return this.ssn == other.ssn; }
});
let personA = Person.create({name: 'Muhammad Ali', ssn: '123-45-6789'});
let personB = Person.create({name: 'Cassius Clay', ssn: '123-45-6789'});
isEqual(personA, personB); // true
```
Due to the expense of array comparisons, collections will never be equal to
each other even if each of their items are equal to each other.
```javascript
import { isEqual } from '@ember/utils';
isEqual([4, 2], [4, 2]); // false
```
@method isEqual
@for @ember/utils
@static
@param {Object} a first object to compare
@param {Object} b second object to compare
@return {Boolean}
@public
*/
export default function isEqual(a, b) {
if (a && typeof a.isEqual === 'function') {
return a.isEqual(b);
}
if (a instanceof Date && b instanceof Date) {
return a.getTime() === b.getTime();
}
return a === b;
}
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3 entries across 3 versions & 1 rubygems