将html压缩的语句
combine: function () {
var html = '';
html += document.getElementById('header-template').innerHTML;
html += document.getElementById('html').innerHTML;
html += document.getElementById('footer-template').innerHTML;
document.getElementById('frame').contentWindow.document.body.innerHTML = html.replace(/[\r\n\t]/ig, ' ').replace(/\s+/ig, ' ');
},