发布于 2015-08-14 15:24:02 | 48 次阅读 | 评论: 0 | 来源: 网络整理
如果该属性设置为一个非空或非不定值，此方法返回true。
model.has(attribute)
<!DOCTYPE html>
<head>
<title> Model 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>
<script type="text/javascript">
var Company = Backbone.Model.extend();
var company=new Company();
company.set({ Name: "YiiBai", comp_site:"www.yiibai.com"});
if(company.has('comp_site'))
{
document.write("The model Company has site: True");
}
else
{
document.write("The model Company has site: False");
}
</script>
</head>
<body></body>
</html>
让我们进行以下步骤来看看上面的代码工作：
保存上述代码在文件has.html
打开浏览器这个HTML文件。