lessThan validator

Check if the value is less than or equals to given number

Options

Using with form field

* presents a required option. The HTML attributes are used to set the validator options via the Declarative plugin

Name HTML attribute Type Description
inclusive data-fv-less-than___inclusive Boolean Can be true (default) or false.
If true, the input value must be less than or equal to the comparison one.
If false, the input value must be less than the comparison one.
max* data-fv-less-than___max Float The number to make a comparison to
message data-fv-less-than___message String The error message

Using with JavaScript module


// You might need to change the importing path
import lessThan from 'formvalidation/validators/lessThan';

const result = lessThan().validate({
    value: ...,
    options: {
        inclusive: ...,
        max: ...,
        message: ...,
    },
});
/*
result is an object of
{
    valid: true or false,
    message: The error message     
}
*/

Module Example

The following snippet shows how to use the lessThan validator with JavaScript module:


// You might need to change the importing path
import lessThan from 'formvalidation/validators/lessThan';

const res1 = lessThan().validate({
    value: 20,
    options: {
        max: 30,
        message: 'The value has to be less than 30',
    },
});
// res1.valid === true

const res2 = lessThan().validate({
    value: 30,
    options: {
        inclusive: false,
        max: 30,
        message: 'The value has to be less than 30',
    },
});
// res2.valid === false

Related validators

The following validators are similar to this one and might be useful to you.

Name Description
between Check if the input value is between (strictly or not) two given numbers
greaterThan Check if the value is greater than or equals to given number