jquery 验证超过最小值

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时间:2020-08-26 20:39:42  来源:igfitidea点击:

jquery validation for more than min value

jqueryjquery-validate

提问by Gowri

I am using the jquery validation pluginfor form validation. Using the minproperty works fine, but I want it to validate values strictly greater thanthat min value.

我正在使用jquery 验证插件进行表单验证。使用该min属性工作正常,但我希望它验证严格大于最小值的值。

rules: {
    price: {
        required: true,
        min: 13,
        number: true
    }
}

In my code I have min: 13, but I don't want to allow 13, only values greater than 13, e.g. 13.10, 13.20, 14. How can I do this?

在我的代码中,我有min: 1313 个,只允许大于 13 的值,例如 13.10、13.20、14。我该怎么做?

Thanks in advance !

提前致谢 !

回答by David Tang

Create your own custom method with $.validator.addMethod:

创建您自己的自定义方法$.validator.addMethod

$.validator.addMethod('minStrict', function (value, el, param) {
    return value > param;
});

Then use:

然后使用:

price: {
    required: true,
    minStrict: 13,
    number: true
}


Note:The creators of the validator plugin recommendadding Number.MIN_VALUEto the value you supply:

注意:验证器插件的创建者建议添加Number.MIN_VALUE您提供的值:

min: 13 + Number.MIN_VALUE

Number.MIN_VALUEis the smallest positive (non-zero) float that JS can handle, hence the logic is that the two statements below are equivalent:

Number.MIN_VALUE是 JS 可以处理的最小正(非零)浮点数,因此逻辑是下面的两个语句是等效的:

a > b;
a >= b + Number.MIN_VALUE;

But, this doesn't work, due to the way floating-point numbers are stored in memory. Rounding will cause b + Number.MIN_VALUEto equal bin most cases (bmust be very smallfor this to work).

但是,由于浮点数存储在内存中的方式,这不起作用。在大多数情况下,舍入将导致b + Number.MIN_VALUE相等bb必须非常小才能使其工作)。

回答by Daniel Miloca - Brazil

min: 13.01, this:

分钟:13.01,这个:

rules:{ price:{ required: true, min: 13.01, number: true } }

rules:{ price:{ required: true, min: 13.01, number: true } }