jquery validation range not working with negative number

Question

I'm using jquery validation to ensure my users do not enter a negative value into a text field.

I have everything set up correctly and the validation is working for certain things, just not the a range. if I input a negative value, validation still passes. Has anyone encountered this?

 <input data-affects="Coaches" data-old="40" data-val="true" data-val-number="The field Maximum Students must be a number." data-val-range="The field Maximum Students must be between 0 and 200." data-val-range-max="200" data-val-range-min="0" id="NumStudentsMax" name="NumStudentsMax" type="number" value="40" aria-invalid="false" class="valid"/>


var foo = null;
$("input").blur(function(e){
    foo = $("form").validate($(this));
    alert(foo.errorList.length > 0);
});

demo: https://jsfiddle.net/guzzjty1/5/

Answer 1

add min="0" to your input :-

  <input data-affects="Coaches" data-old="40" data-val="true" data-val-number="The field Maximum Students must be a number." data-val-range="The field Maximum Students must be between 0 and 200." data-val-range-max="200" data-val-range-min="0" id="NumStudentsMax" name="NumStudentsMax" min="0" type="number" value="40" aria-invalid="false" class="valid"/>

Demo

Answer 2

Seems like the problem is due to html validation and unobtrusive validation becoming more inline. as mentioned by Mohit, it now works with the 'min' attribute.

As asp.net mvc adds the data-val-range-min value. my quick fix just took that value and inserted a 'min' attribute with the same value, using javascript

   //fix validator for range
    $("[data-val-range-min]").each(function (e) {
      var t =  $("[data-val-range-min]:eq("+e+")")
    t.attr("min", t.attr("data-val-range-min"));
    });
    $("[data-val-range-max]").each(function (e) {
        var t = $("[data-val-range-max]:eq(" + e + ")")
        t.attr("max", t.attr("data-val-range-max"));
    });

Answer 3

Try adding data-val-range-min="5E-324" as an attribute to your input This says values greater than 0. Actually 5E-324 is the smallest positive value.