Discussion on the use of Js time function getYear()_javascript skills

The getYear() function was deprecated a long time ago because it was displayed incorrectly in Firefox. It is recommended to use the getFullYear() function.
In addition, Firefox does not support the innerText attribute and needs to be changed to textContent to receive it.
Then attach the code

Copy the code The code is as follows:

var s,Sys = {},ua = window.navigator.userAgent.toLowerCase();
(s = ua.match(/msie ([d.] )/)) ? Sys.ie = s[1] :
( s = ua.match(/firefox/([d.] )/)) ? Sys.firefox = s[1] :
(s = ua.match(/chrome/([d.] )/)) ? Sys.chrome = s[1] :
(s = ua.match(/opera.([d.] )/)) ? Sys.opera = s[1] :
(s = ua. match(/version/([d.] ).*safari/)) ? Sys.safari = s[1] : 0;
//Browser version number for testing
//if (Sys.ie ) { document.write('IE: ' Sys.ie); }
//if (Sys.firefox){ document.write('Firefox: ' Sys.firefox);}
//if (Sys .chrome){ document.write('Chrome: ' Sys.chrome);}
//if (Sys.opera){ document.write('Opera: ' Sys.opera);}
//if (Sys.safari) { document.write('Safari: ' Sys.safari); }
var today = new Date();
var day,date;
if (today.getDay() = = 0) { day = "Sunday"; }
if (today.getDay() == 1) { day = "Monday"; }
if (today.getDay() == 2) { day = "Tuesday"; }
if (today.getDay() == 3) { day = "Wednesday"; }
if (today.getDay() == 4) { day = "Thursday"; }
if (today.getDay() == 5) { day = "Friday"; }
if (today.getDay() == 6) { day = "Saturday"; }
date = " Today is: " (today.getFullYear()) "Year" (today.getMonth() 1) "Month" today.getDate() "Day" day "";
if (Sys.firefox)
{
document.getElementById('time_id').textContent = date;
} else {
document.getElementById('time_id').innerText = date;
}