JSLINT

como eu faço para tirar esse jslint problem ! eu linko o js externo pro html, dps eu escrevo o cogido no app,js, mas quando eu vou executar aparece esse problema JSLINT ! como faco pra tirar esse problema JSLINT? ou sera que nao da?

('.collection-item').on('click', function () {
    'use strict';
    var $badge;
    $badge = ('<span class="badge">0</span>');
});



6 JSLint Problems
×
1    '$' was used before it was defined.    $('.collection').on('click', function(){
1    Expected exactly one space between 'function' and '('.    $('.collection').on('click', function(){
1    Expected exactly one space between ')' and '{'.    $('.collection').on('click', function(){
1    Missing space between ')' and '{'.    $('.collection').on('click', function(){
2    Missing 'use strict' statement.    var $badge = $('.badge', this);
4    Expected '}' at column 1, not column 5.    });