它用於將集合的狀態維護到服務器。它可以被自定義行為覆蓋。
用法:
collection.sync(method, collection, options)
參數說明:
method:它表示 CRUD 操作:創建、讀取、更新和刪除。
collection:它包含一組模型來保存集合中的數據。
options:它用於根據成功的方法顯示成功或錯誤消息。
讓我們舉個例子。
看這個例子:
<!DOCTYPE html>
<head>
<title>Sync Collection Example</title>
<script src="https://code.jquery.com/jquery-2.1.3.min.js" type="text/javascript"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.8.2/underscore-min.js" type="text/javascript"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/backbone.js/1.1.2/backbone-min.js" type="text/javascript"></script>
</head>
<body>
<script type="text/javascript">
//The sync() method reads and fetches the model data
Backbone.sync = function(method, model) {
document.write("The state of the model is:");
document.write("<br>");
//The 'method' specifies state of the model
document.write(method + ":" + JSON.stringify(model));
};
//The 'myval' is collection instance and contains the values which are to be fetched in the collection
var myval = new Backbone.Collection({
site:"JavaTpoint",
title:"A solution of all technology"
});
//The myval.fetch() method display the model's state by delegating the sync() method
myval.fetch();
</script>
</body>
</html>
輸出:
將上述代碼保存在 sync.html 文件中,然後在新瀏覽器中打開此文件。

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注:本文由純淨天空篩選整理自 Backbone.js collection.sync()。非經特殊聲明,原始代碼版權歸原作者所有,本譯文未經允許或授權,請勿轉載或複製。