4 ways to write JS code for what day of the week today is_javascript skills

The first way to write

Copy code The code is as follows:

var str = "" ;
var week = new Date().getDay();
if (week == 0) {
str = "Today is Sunday";
} else if (week == 1) {
str = "Today is Monday";
} else if (week == 2) {
str = "Today is Tuesday";
} else if (week == 3) {
str = "Today is Wednesday";
} else if (week == 4) {
str = "Today is Thursday";
} else if (week == 5) {
        str = "Today is Friday";
} else if (week == 6) {
        str = "Today is Saturday"; > alert(str);


The second writing method

Copy code The code is as follows:

var str = "Today is week";

var week = new Date().getDay();
switch (week) {
case 0 :
str = "日";
break;
case 1 :
str = "一";
break;
case 2:
str = "二";
               break;             str = "四";                                                        :
str = "five";
break;
case 6 :
str = "six";
break;
}
alert(str);


The third way of writing




Copy code

The code is as follows:

var a = new Array("日", "一", "二", "三", "四", "五", "六"); var week = new Date().getDay(); var str = "Today is week" a[week]; alert(str); The fourth way of writing

Copy the code

The code is as follows:

var str = "Today is week" "Day one, two, three, four, five, six".charAt(new Date().getDay( ));alert(str);