JS常用的function集合

　　1.把字符串转为日期格式

       （1） var str ='2012-08-12 23:13:15';str = str.replace(/-/g,"/");var date = new Date(str );

（2）  function strToDate(str) {

 var tempStrs = str.split(" ");
 var dateStrs = tempStrs[0].split("-");
 var year = parseInt(dateStrs[0], 10);
 var month = parseInt(dateStrs[1], 10) - 1;
 var day = parseInt(dateStrs[2], 10);
 var timeStrs = tempStrs[1].split("-");
 var hour = parseInt(timeStrs [0], 10);
 var minute = parseInt(timeStrs[1], 10) - 1;
 var second = parseInt(timeStrs[2], 10);
 var date = new Date(year, month, day, hour, minute, second);
 return date;
}