validationError
描述 (Description)
它是validate()方法返回的值，如果验证失败或触发invalid事件，则显示验证错误。
语法 (Syntax)
|
例子 (Example)
<!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 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">
var Person = Backbone.Model.extend({
defaults: {
name: 'john',
age: 25,
occupation: 'working'
},
initialize : function(){
this.on("invalid",function(model,error){
document.write(error);
});
},
validate: function(attributes) {
if ( attributes.age < 25 ) {
return 'please enter the correct age!!! ';
}
if ( ! attributes.name ) {
return 'please enter the name!!!';
}
},
});
var person = new Person();
person.on('invalid', function() {
this.arguments;
});
person.set({ age : '20' }, { validate : true });
</script>
</body>
</html>
输出 (Output)
让我们执行以下步骤来查看上面的代码是如何工作的 -
将以上代码保存在validationError.htm文件中
在浏览器中打开此HTML文件。
