let iframe = document.querySelector('iframe'),
originalSrc = iframe.src,
hash = location.hash
if (~originalSrc.indexOf('#')) {
iframe.src = originalSrc.replace(/#.+/, hash)
} else {
iframe.src = originalSrc + hash
}myButton.addEventListener('click', function() {
// проверяем что там в форме
})function loadJS(src, callback) {
var s = document.createElement('script');
s.src = src;
s.async = true;
s.onreadystatechange = s.onload = function() {
var state = s.readyState;
if (!callback.done && (!state || /loaded|complete/.test(state))) {
callback.done = true;
callback();
}
};
document.getElementsByTagName('head')[0].appendChild(s);
}// пример использования
loadJS('/js/bootstrap-combobox-plugin.js', function() {
$('select.combobox').combobox()
});