javascript中日期转换成时间戳

/**

* 日期转化成时间戳

* 日期格式 2011-02-02 21:12:13

* time_str:日期段 2011-02-02

* fix_time:时间段 21:12:13

*/

function strtotime(time_str, fix_time) {

var time = (new Date()).getTime();

if(time_str) {//有日期段

var str = time_str.split('-');

if (3 === str.length) {

var year = parseInt(str[0]) - 0;

var month = parseInt(str[1]) - 0 - 1;//月份是从0开始的

var day = parseInt(str[2]) - 0;

if(fix_time) {//有时间段

var fix = fix_time.split(':');

if (3 === fix.length) {

var hour = parseInt(fix[0]) - 0;

var minute = parseInt(fix[1]) - 0;

var second = parseInt(fix[2]) - 0;

time = (new Date(year, month, day, hour, minute, second)).getTime();

}

} else {

time = (new Date(year, month, day)).getTime();

}

}

}

//getTime()获取的时间戳到了毫秒数

time = time / 1000;//转到到秒数

return time;

}