js帮助类

//格式化日期 yyyy-mm-dd
function formatDate(date) {
	var d = new Date(date),
		month = '' + (d.getMonth() + 1),
		day = '' + d.getDate(),
		year = d.getFullYear();

	if (month.length < 2) month = '0' + month;
	if (day.length < 2) day = '0' + day;

	return [year, month, day].join('-');
}
//判断字符不为空
function isNotNull(strings){
	if (strings.replace(/(^s*)|(s*$)/g, "").length ==0)
	{
		return false;
	}
	return true;
}
//判断字符为空
function isNull(strings){
	return !isNotNull(strings)
}

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