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Example Of _.extend

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Javasper answered on May 5, 2022 Popularity 3/10 Helpfulness 1/10

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Example Of _.extend

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class Person
{
  constructor(firstName)
  {
    this.firstName = firstName
  }
}


 _.extend(Person.prototype, {addedProperty:"ssssxxxxssss"});

const p = new Person("james");
console.log(p.addedProperty);

Popularity 3/10 Helpfulness 1/10 Language javascript

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Tags: javascript

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Contributed on Jul 06 2022

Javasper

0 Answers Avg Quality 2/10

Closely Related Answers

_.extend

Comment

/**
* Underscore.js
*
* The _.extend() function is used to create a copy of all of the properties 
* of the source objects over the destination object and 
* return the destination object. 
* The nested arrays or objects will be copied by using reference, not duplicated.
**/
import * as _ from 'underscore'
_.extend(destination, *sources)

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Contributed on May 05 2022

Radguru

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_.extend Example

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p = _.extend(Person.prototype, {a:"AAAAAAAA"});
var x =  new p.constructor("some extra stuff");
console.log(x.a);
console.log(x.firstName);
/*has both a="AAAAAAA" and firstName="some extra stuff"*/
/*add stuff to the second, you can think of it as*/

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Tags: javascript

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Contributed on Jul 06 2022

Javasper

0 Answers Avg Quality 2/10

Example Of _.extend

Comment

class Person
{
  constructor(firstName)
  {
    this.firstName = firstName
  }
}

class Thing
{
  constructor()
  {
    this.addProperty = "firstName";
  }
}
 

 _.extend(Person.prototype, Thing.property);

const p = new Person("james");
console.log(p.addedProperty);

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Contributed on Jul 06 2022

Javasper

0 Answers Avg Quality 2/10

Example of _.extend

Comment

Person = function(attributes)
{
this.attributes = attributes;
}


_.extend(Person.prototype, {test: function(){return _.clone(this.attributes)}});

const s = new Person("some test text");
 console.log(s.attributes);
 console.log(s.test());
 /*the key to getting attributes to display is using a function(){} and _.clone()*/
/*just test: this.attributes will be undefined*/

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Contributed on Jul 07 2022

Javasper

0 Answers Avg Quality 2/10

_.extend() Explanation

Comment

 var Collection = Backbone.Collection = function(models, options) {
 /**/
    };
    _.extend(Collection.prototype, Events, {...});


/*  h: function(){console.log(this.models);},
so after you use the _.extend, in the third or second {} you want to add to the prototype, any of the inputs parameters of the prototype you can access in the 2nd or 3rd part with this.models 
*/

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Contributed on Jul 08 2022

Javasper

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Another _.extend Example

Comment

Person = function(name)
{
  this.name = "name";
  this.a = function(a)
 
 {console.log(a)
 
 }

 this.a(this.name);
  this.b();
}

_.extend(Person.prototype, {x: function(){console.log(this.name)}, b: function(){console.log("BBBBBBBBBBBBB")}});

const p= new Person("XXXX");
p.x();


the above is valid code so long as a this.name exists in the Person.prototype

the this.b() is also valid code so long as b() is added in later at the _.extend() part.

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Contributed on Jul 09 2022

Javasper

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Example Of _.extend

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