How to implement “select all” check box in HTML?

Question

I have an HTML page with multiple checkboxes.

I need one more checkbox by the name \"select all\". When I select this checkbox all checkboxes in the HTML page must b

Answer 1

Here is a backbone.js implementation:

events: {
    "click #toggleChecked" : "toggleChecked"
},
toggleChecked: function(event) {

    var checkboxes = document.getElementsByName('options');
    for(var i=0; i