Backbone.js isValid模型通过使用validate()方法检查模型的状态。它检查每个属性的验证。
句法:
model.isValid()
让我们举个例子。
请参阅以下示例:
<!DOCTYPE html>
<head>
<title> isValid 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 Person = Backbone.Model.extend({
defaults: {
name: '', age: 25, }, validate: function(attributes) {
if (attributes.name == '') {
document.write("Please enter the name!!!!");
}
}
});
var person = new Person({
name: 'Sonoo'
});
document.write("The passed value for attribute 'name' is: ", person.isValid());
</script>
</head>
</html>
输出:
将以上代码保存在isvalid.html文件中,然后在新的浏览器中打开此文件。
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