如何使用validate.js验证类型

Question

我想要做的是验证对象属性的类型

例如

var correctObject = {
    name : "John",
    age : 25
};

var constraints = {
    ...
};

validate(testObject, constraints);
//undefined test passes

var incorrectObject = {
    name : "John",
    age : "25"
};

validate(incorrectObject, constraints);
// age must be a string