在lodash中添加对象的新属性

Question

I've two objects and I want to add properties from object A to object B and I try with extend which doesn't work,do I need to use something different ?

a = {
name = "value"
name2 = "value2"
}

b = {
name3 = "value"
name4 = "value2"
}

I want that A will contain both

a = {
name = "value"
name2 = "value2"
name3 = "value"
name4 = "value2"
}

Answer 1

_.extend (now called _.assign ) is indeed how you do this:

_.assign(a, b);

Live Example :

 var a = { name: "value", name2: "value2" }; var b = { name3: "value", name4: "value2" }; _.assign(a, b); document.body.insertAdjacentHTML( "beforeend", "Result:<pre>" + JSON.stringify(a, null, 2) + "</pre>" ); 

 <script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.16.6/lodash.min.js"></script> 

Answer 2

First of all, your defined objects are incorrect. Objects must be written as name:value pairs, separated by a colon (and not by an equality sign). Furthermore, you must use comma separators to delimit the properties of the object, like:

var person = {
    firstName: "Matthias",
    lastName: "Eckhart",
    eyeColor: "blue"
};

---

To extend an object with various properties via lodash , you can use _.assign(object, [sources], [customizer], [thisArg]) :

 var a = { name: "value", name2: "value2" }; var b = { name3: "value", name4: "value2" }; _.assign(a, b); // extend console.log(a); 

 <script src="https://raw.githubusercontent.com/lodash/lodash/3.10.1/lodash.min.js"></script> 

Answer 3

I believe you want to use the lodash merge function, rather than extend . See: Lodash - difference between .extend() / .assign() and .merge()