javascript手冊-u-z[1]

描述

the unescape function is not a method associated with any object, but is part of the language itself.

the string returned by the unescape function is a series of characters in the iso latin-1 character set.

例子

the following example returns "&"

unescape("%26")

the following example returns "!#"

unescape("%21%23")

相关

a string representing the value of the user-agent header sent in the http protocol from client to server.

语法

navigator.useragent

property of

navigator

描述

servers use the value sent in the user-agent header to identify the client.

useragent is a read-only property.

例子

the following example displays useragent information for the navigator:

document.write("the value of navigator.useragent is " +
   navigator.useragent)

for navigator 2.0, this displays the following:

the value of navigator.useragent is mozilla/2.0 (win16; i)

相关

returns the number of milliseconds in a date object since january 1, 1970 00:00:00, universal coordinated time (gmt).

语法

date.utc(year, month, day [, hrs] [, min] [, sec])

year is a year after 1900.
month is a month between 0-11.
date is a day of the month between 1-31.
hrs is hours between 0-23.
min is minutes between 0-59.
sec is seconds between 0-59.

用法

date

描述

utc takes comma-delimited date parameters and returns the number of milliseconds since january 1, 1970 00:00:00, universal coordinated time (gmt).

because utc is a static 用法 date, you always use it as date.utc(), rather than as a 用法 a date object you created.

例子

the following statement creates a date object using gmt instead of local time:

gmtdate = new date(date.utc(96, 11, 1, 0, 0, 0))

相关

a string that is related to the value attribute of its object.

语法

1. objectname.value
2. radioname[index].value
3. selectname.options.[index].value

objectname is either the value of the name attribute of a hidden, password, text, textarea, button, reset, submit or checkbox object or an element in the elements array.
radioname is the value of the name attribute of a radio object.
selectname is either the value of the name attribute of a select object or an element in the elements array.