php-web-maker/src/options.js

// Restores preferences from chrome.storage.
function restoreOptions() {
	chrome.storage.sync.get({
		preserveLastCode: true,
		replaceNewTab: false
	}, function(items) {
		document.forms.optionsForm.preserveLastCode.checked = items.preserveLastCode;
		document.forms.optionsForm.replaceNewTab.checked = items.replaceNewTab;
	});
}

function saveOptions(e) {
	var preserveLastCode = document.forms.optionsForm.preserveLastCode.checked;
	var replaceNewTab = document.forms.optionsForm.replaceNewTab.checked;

	chrome.storage.sync.set({
		preserveLastCode: preserveLastCode,
		replaceNewTab: replaceNewTab
	}, function() {
		var status = document.getElementById('js-status');
		status.textContent = 'Settings saved.';
		setTimeout(function() {
			status.innerHTML = ' ';
		}, 750);
	});

	e.preventDefault();
}

document.addEventListener('DOMContentLoaded', restoreOptions);
document.forms.optionsForm.addEventListener('submit',
	saveOptions);