本文概述
- 参数说明
句法:
collection.add(models, options)
参数说明模型:它包含集合实例的名称,需要在集合中添加它们。
选项:包括模型类型,并将它们添加到集合实例中。
让我们举个例子。
请参阅以下示例:
<
!DOCTYPE html>
<
head>
<
title>Add Collection Example<
/title>
<
script src="http://img.readke.com/220416/043P44G2-0.jpg" type="text/javascript"><
/script>
<
script src="http://img.readke.com/220416/043P43334-1.jpg" type="text/javascript"><
/script>
<
script src="http://img.readke.com/220416/043P45G3-2.jpg" type="text/javascript"><
/script>
<
/head>
<
body>
<
script type="text/javascript">
//Consider a model 'Player' containing default values.
var Player = Backbone.Model.extend({
defaults: {
name: "Sachin", country:"India"
}
});
//The 'PlayersCollection' is a collection instance and model 'Player' is specified by overriding the 'model' property
var PlayersCollection = Backbone.Collection.extend({
model: Player
});
//The instances "player1" and "player2" are created for the model "Player"
var player1 = new Player({name: "Dhoni", country:"India"});
var player2 = new Player({name: "Sehwag", country:"India"});
var player3 = new Player({name: "Virat", country:"India"});
//The add() method adds the models 'player1''player2' and'player3' to the collection instance 'mycollection'
var mycollection = new PlayersCollection();
mycollection.add([player1, player2, player3]);
//The 'length' property deteremines length of the collection
document.write('Number of added players : ' + mycollection.length);
<
/script>
<
/body>
<
/html>
输出:
【backbone.js集合add】将上面的代码保存在add.html文件中,并在新的浏览器中打开该文件:
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