Limits the number of checkboxes that can be checked

The good thing about jQuery is that we can extend the library very easily, and today we are going to extend it to add a function that will allow us to limit the maximum number of checked checkboxes, something that can be really interesting.

First step: Add the limitCheckbox function to jQuery:

$ .fn.limitarCheckbox = function (num) {

var check = this;

this.click (function () {return (check.filter (": checked"). length <= num);}); / * We take the number of checked checks and see if they exceed our parameter * /

}

$ ("Input: checkbox"). LimitCheckbox (6);

/ * We can use any selector as long as it has checkboxes ... and you can limit it to whatever you want * /