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Contents
/**
Checks to see if the `methodName` exists on the `obj`.
```javascript
let foo = { bar: function() { return 'bar'; }, baz: null };
Ember.canInvoke(foo, 'bar'); // true
Ember.canInvoke(foo, 'baz'); // false
Ember.canInvoke(foo, 'bat'); // false
```
@method canInvoke
@for Ember
@param {Object} obj The object to check for the method
@param {String} methodName The method name to check for
@return {Boolean}
@private
*/
export function canInvoke(obj, methodName) {
return obj !== null && obj !== undefined && typeof obj[methodName] === 'function';
}
/**
@module @ember/utils
*/
/**
Checks to see if the `methodName` exists on the `obj`,
and if it does, invokes it with the arguments passed.
```javascript
import { tryInvoke } from '@ember/utils';
let d = new Date('03/15/2013');
tryInvoke(d, 'getTime'); // 1363320000000
tryInvoke(d, 'setFullYear', [2014]); // 1394856000000
tryInvoke(d, 'noSuchMethod', [2014]); // undefined
```
@method tryInvoke
@for @ember/utils
@static
@param {Object} obj The object to check for the method
@param {String} methodName The method name to check for
@param {Array} [args] The arguments to pass to the method
@return {*} the return value of the invoked method or undefined if it cannot be invoked
@public
*/
export function tryInvoke(obj, methodName, args) {
if (canInvoke(obj, methodName)) {
let method = obj[methodName];
return method.apply(obj, args);
}
}
Version data entries
3 entries across 3 versions & 1 rubygems