Backbone.sync
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2023-12-01
描述 (Description)
这是Backbone每次调用或将模型保存到服务器时调用的函数。 它代表了模型的状态。
语法 (Syntax)
sync.(method, model, options)
参数 (Parameters)
method - 它表示CRUD操作,如创建,读取,更新和删除。
model - 包括要保存的模型。
options - 根据成功的方法触发成功或错误消息。
例子 (Example)
<!DOCTYPE html>
<html>
<head>
<title>Sync 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 fetched 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));
};
//'myval' is a collection instance and contains the values which are
//to be fetched in the collection
var myval = new Backbone.Collection ({
site:"xnip",
title:"Simply Easy Learning..."
});
//The myval.fetch() method displays the model's state by delegating to
//sync() method
myval.fetch();
</script>
</body>
</html>