这是答案,我从这里找到了 我的 js-fiddle 在这里
var d = new Date();
var curr_date = d.getDate();
var curr_month = d.getMonth();/* Returns the month (from 0-11) */
var curr_month_plus= curr_month+1; /* because if the month is 4 it will show output 3 so we have to add +1 with month*/
var curr_year = d.getFullYear();
function dstrToUTC(ds) {
var dsarr = ds.split("/");
var mm = parseInt(dsarr[0],10);
var dd = parseInt(dsarr[1],10);
var yy = parseInt(dsarr[2],10);
return Date.UTC(yy,mm-1,dd,0,0,0); }
function datediff(ds1,ds2) {
var d1 = dstrToUTC(ds1);
var d2 = dstrToUTC(ds2);
var oneday = 86400000;
return (d2-d1) / oneday; }
var a =curr_month_plus+ '/' + curr_date + '/' + curr_year;
var b;
b = "5/26/2012";
document.write(+datediff(a,b)+" day(s)<br>");