Common JS functions

Escapse () encoding function
Escape ("(") =%28

Unescape () decoding function
Unescape ("%29") =)

eval () evaluation function
Eval ("one") = 11

IsNaN () numeric judgment function = = is not a number
IsNaN (0) = False
IsNaN ("a") = True
IsNaN (NULL) = False
IsNaN (undefined) = True

Parseint () turns into an integer function
parseint ("a") = 12

Parsefloat () turns into floating point number
Parsefloat ("12.3"). ToFixed (2); = 12.30

Array
var str = new Array ();
var str = new Array ([5]);
var str = new Array (+/-);

var = new Array (S1);
var s2 = new Array (3,2,1);

Concat () combines multiple arrays into a new array
var s3 = S1.concat (S2);
S3 = [1,2,3,3,2,1]
Only change S3, not change S1

Join () array elements are combined into a string, separated by specific characters
var S4 = S1.join ("-");
S4 = "the"

Split () Convert string to array
var S5 = S4.split ("-");
S5 = ["1", "2", "3"]

Shift () removes the first element of the array
S1.shift () = [2,3]

Pop () removes the last element of the array
S1.pop () = [+]

Push () puts an element into an array
S1.push (4) = [1,2,4]

Reverse () reversal
S1.reverse () = [4,2,1]

Slice () introduces the contents of the array into a new array, the original array is unchanged
S1.slice (1) = [2,1]

ValueOf () Get array contents
s1.valueof () = [2,1]

Boolean Object
1) If the conversion value is null, undefined, 0, and false are converted to logical values false
2) The rest is turned into true
var a = new Boolean (NULL) = False
var B = new Boolean (true) = True

ToString ()
A.tostring () = "false"

ValueOf ()
B.valueof () = True

Date Object
var sysdate = new Date ()
Sysdate.getyear ();
Sysdate.getfullyear ();
Sysdate.getmonth (); 0-11
Sysdate.getdate (); 1-31
Sysdate.getday (); Day of the week 0-6
Sysdate.gethours (); 0-23
Sysdate.getminutes (); 0-59
Sysdate.getseconds (); 0-59
Sysdate.getmilliseconds (); Milliseconds for a specific day 0-999
Sysdate.gettime (); Numeric value for a specific date

Mathematical functions
Math.ceil (1.22) = 2
Math.floor (1.22) = 1
Math.Round (1.22) = 1

Math.ceil (1.52) = 2
Math.floor (1.52) = 1
Math.Round (1.52) = 2

String Object
var str = new String ("ABCD");
str = = String {0: "A", 1: "B", 2: "C", 3: "D", length:4}

Anchor () Anchor Point
Str.anchor ("cc") = "<a name=" CC ">abcd</a>"

Fixed () fix word
Str.fixed () = "<tt>abcd</tt>"

FontSize ()
Str.fontsize (7) = "<font size=" 7 ">abcd</font>"

Search ()
Str.search ("b") = 1

Window Object Format
You need to label the window in front, and in many advanced applications, you can use a different alias instead of window
Example: When the system contains more than one size window
Opener: Indicates that the current window is open
Parnet: Represents the parent window of the upper frame
Self: Represents the currently active window
Top: Represents the topmost window

Closed: Determines whether the window is closed, the return value is a Boolean value
Status: Temporary information that represents the Status toolbar
Location: Contains information about the current URL
Parent: Represents the containing current window or frame group
Toolbar: The toolbar that represents the browser