JS 时间字符串转换成时间

/**

* 把时间字符串转换成绝对时间

*

* @param datastr 时间格式为：2012-12-26 16:46:46

* @return

*/

function timeExchange(datastr) {

var date = new Date();

var perfex = datastr.split(" ")[0];

var surfex = datastr.split(" ")[1]

if (perfex) {

var y = perfex.split("-")[0] / 1;

//因为月是从0开始的，所以减一

var m = perfex.split("-")[1] / 1-1;

var d = perfex.split("-")[2] / 1;

date.setFullYear(y, m, d);

}

if (surfex) {

var h = surfex.split(":")[0] / 1;

var m = surfex.split(":")[1] / 1;

var s = surfex.split(":")[2] / 1;

date.setHours(h, m, s, 0);

}

return date.getTime();

}