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51 lines
1.6 KiB
JavaScript
51 lines
1.6 KiB
JavaScript
9 years ago
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var baseFlatten = require('../internal/baseFlatten'),
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createWrapper = require('../internal/createWrapper'),
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functions = require('../object/functions'),
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restParam = require('./restParam');
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/** Used to compose bitmasks for wrapper metadata. */
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var BIND_FLAG = 1;
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/**
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* Binds methods of an object to the object itself, overwriting the existing
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* method. Method names may be specified as individual arguments or as arrays
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* of method names. If no method names are provided all enumerable function
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* properties, own and inherited, of `object` are bound.
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*
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* **Note:** This method does not set the "length" property of bound functions.
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*
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* @static
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* @memberOf _
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* @category Function
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* @param {Object} object The object to bind and assign the bound methods to.
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* @param {...(string|string[])} [methodNames] The object method names to bind,
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* specified as individual method names or arrays of method names.
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* @returns {Object} Returns `object`.
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* @example
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*
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* var view = {
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* 'label': 'docs',
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* 'onClick': function() {
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* console.log('clicked ' + this.label);
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* }
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* };
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*
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* _.bindAll(view);
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* jQuery('#docs').on('click', view.onClick);
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* // => logs 'clicked docs' when the element is clicked
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*/
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var bindAll = restParam(function(object, methodNames) {
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methodNames = methodNames.length ? baseFlatten(methodNames) : functions(object);
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var index = -1,
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length = methodNames.length;
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while (++index < length) {
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var key = methodNames[index];
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object[key] = createWrapper(object[key], BIND_FLAG, object);
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}
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return object;
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});
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module.exports = bindAll;
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