JavaScript object and array reference Daquan

xiaoxiao2021-03-06 104

This article lists various JavaScript objects and arrays, including short descriptions of each of the above objects or arrays, and related attribute methods, and event handlers, but also indicate the parent user of the object or array. It is also possible to refer to the Object Hierarchy page in Online Companion (

http://www.netscapepress.com/support/javascript/10-9.htm) so as to understand how these objects are related to each other.

By the way, remember, here all the objects of the child object as another object see the property of this object, see Chapter 10, in this decomposition.

B.1 Anchor object

The HTML point created by Mark can be used as a link as a target if an anchor includes href = characteristics, it is also a link object.

Anchor object is an attribute of the Document object, which does not have an attribute method or an event handler.

B.2 Anchors array

Anchors array is an attribute of the Document object. It is a list of all Anchor objects in the document. If Anchor is also a link (link), it will appear at the same ANCHORS and LINKS arrays.

Attributes

Number of anchor points in the Length document

B.3 Array object

The Array object is a new object introduced in Netscape Navlgator 3.0 Beta 3, which cannot be used in Netscape 2.0 to use it is a built-in object, not the properties of other objects.

Attributes

LENGTH array value

B.4 Button object

It is an attribute of the Form object, uses

Attributes

Name = characteristics in Name HTML tag

Value = Features in Value HTML tag

method

Click analog mouse click a button

Event handler

Onclick

B.5 Checkbox object

It is an attribute of the Form object, creates it using the tag.

Attributes

Checked check box Select Status

DefaultChecked tag checked = features

Name = characteristics

Value tag value = characteristic

method

Click Analog Mouse Click the button

Event handler

Onclick

B.6 Date object

It is a built-in object - instead of other objects, allowing users to perform various date and time of use.

method

Getdate () View Date objects and return the date

Getday () returns the day of the week

GetHours () Returns the number of hours

Getminutes () Returns the number of minutes

GetMonth () returns the month value

GetSeconds () Returns the number of seconds

getTime () Returns the full time

GetTimeZoneOffset () Returns the time zone deviation value (Greenwich average time and time zone settings in the time zone setting of the run script)

GetYear () returns the year

PARSE () Returns in the Date string Since the number of milliseconds since January 1, 1970 (Date object stored in the form of milliseconds from the date and time), but note that the method cannot Run correctly

SetDate () changes the date of the Date object

SetHours () change the number of hours

Setminutes () change the number of minutes

SetMonth () change the month

SetSeconds () change the number of seconds

SetTime () changes the complete time

SetYear () change the year

TogMTString () transforms the date (a value) of the DATE object into a GMT time string, returns the following values: Weds, 15 June L997 14:02:02 GMT (precise format depends on the operating system running on your computer Change)

TOLOCALESTRING () converts the date (a value) of the DATE object into a string, using the specific date format used on the computer

UTC () uses Date UTC (year, month, day, hour, minute, second) to the number of milliseconds since 00:00:00 from January 1, 1970 (where the minute, second is optional) Form Return Date B.7 Document Object

This object is an attribute of Window and Frames objects, which is a document displayed within the window or frame.

Attributes

AlinkColor activity link color (Alink)

Anchor an HTMI anchor, use tag (this property itself is also an object)

Anchors array lists the arrays of the document anchor object () (this property itself is also an object)

Background color of BGColor documents (BGColor)

Cookies are stored in a cookie.txt file, which is an attribute of the document object

FGColor document text color (Text features in tag)

A form (

) in the Form document (this property itself is also an object)

Forms Anay Lists an array of form objects in order that appears in the document (this property itself is also an object)

LastModified document last modified date

The link of the link of the LinkColor document, that is, the LINK feature in the tag (link to the document that the user does not observe)

One tag in the LINK document (this property itself is also an object)

A array of link objects in the Links Array document, in order of the order in which they appear in the document (this property itself is also an object)

Location The URL of the document is currently displayed. Users cannot change Document.Location (because this is the location of the current display). However, you can change window.location (replacing the current document with other documents) Window.Location itself is also an object, and Document.Location is not an object.

ReferRer contains the URL of the link, the user clicks the link to the current document

Title Document Title ((Title>)

VLINKCOLOR points to the link text color of the document has been observed, that is, tag of VLINK features

method

CLEAR clears the content of the specified document

Close Close Documentation

Open opens the document stream

Write writes text into documents

WriteLn writes text into documents and ends

B.8 Elements array

It is an attribute of the Form object, enumerating an array of each element in the form.

Attributes

A number of elements in the 1ENGTH form

B.9 FORM object

It is an attribute of the Document object, a form within the document.

Attributes

Action contains a string of target URL submitted for a form

One button in the Button form is created using the

Checkbox check box, create (this property itself is also an object) using the

Elements Array A array, which lists each form element in order that appears in the form (this property itself is also an object)

MIME encoding of an Encoding Form

A hidden element in the Hidden form (). A property of the form object (this property itself is also an object)

Number of elements in the Length form

Method Enter the form of data to the server to the server, namely (form) Method characteristics

Radio is set in the radio button in the form () (This property itself is also an object)

Select box in the SELECT form () (This property itself is also an object)

After the Target submits the form, the text element in the name of the window of the response information () (this property itself is also an object)

The text area element in the Textarta form () (This property itself is also an object) method Submit Submit Form (same as the role of using the Submit button) Event handler OnSubmit B.10 Forms array The array is an attribute of the Document object, that is, an array of each form within the document. Attributes Number of forms in the Length document B.11 Frame object It is an attribute of the Window object, a frame in the window. In addition to individual exceptions, the Frame object is the same as the Window object. Attributes Frames Array enumerates an array of each sub-frame within the frame (this property itself is also object) LENGTH number in this frame Name Frame Name (<frame> Name features in the tag) Parent contains synonyms of the parent window of this framework Synonym of Self Current Framework Synonym of Window Current Framework method Cleartimeout () used to terminate the work of the SetTimeout method SetTimeOut () Wait for the specified milliseconds, then run the instruction B.12 Frames array It is both a Window object, and an attribute of the Frame object, which lists each frame in Window or Frame object. Attributes LENGTH window or number of frames within the frame object B.13 Hidden object A property of a confused Form object, a hidden element in the form (<input type = "hidden">). Attributes Name tag name (Name characteristics) Value = Features in the Value tag B.14 History object It is an attribute of the Window object, which historical list of the window. Attributes Number of items in the LENGTH history list method Back the last document in the historical list Forward Loading the next document in the historical list GO load history list in a specified document, specified by the location of the document in the list B.15 image object It is an attribute of the Document object that is an image in which the document is embedded in the document is used (1MG) This is the new object introduced into the Netscape Navigator 3.0 Beta 3. Attributes Border <IMG> Mark Border Features Complete indicates whether the browser completely loads a Boolean value Height Height features Hspace HSPACE features LOWSRC LOWSRC features SRC SRC features vSpace vSpace feature Width Width Features Event handler Onload image load OneRror load error OnAbort cancels B.16 Images arrand It is an attribute of the Document object, a list of all images in the document. Attributes Image of images within Length documents B.17 LINK It is an attribute of the Document object, one <a href=> tag within the document. Attributes HASH starts with a string beginning with the hash number (#) used to specify an anchor within the URL Host includes the host name part of the URL of the colon and port number Hostname is the same as the Host property, except for the colon and port number HREF complete URL Pathname URL directory path part Port URL: Port Part Protocol URL Type (http:, ftp:, gopher:, etc.) SEARCH is used to specify search information in the URL starting in a question mark Target When a user clicks a link (TARGET feature), the window used to display the contents of the referenced document Event handler Onclick click OnMouseOver mouse moves to the object B.18 LINKS array It is an attribute of the Document object, a list of all links in the document. Attributes Link number in the Length document B.19 Location object It is an attribute of the Document object, the full URL of the document, please do not confuse it with the Window.Location property, the latter can be used to load a new document, and the Window.Location property itself is not an object, while Window. Location can be modified with script, and Document.Location cannot be. Attributes HASH starts with a string beginning with the hash number (#) used to specify an anchor within the URL Host includes the host name part of the URL of the colon and port number Hostname is the same as the Host property, except for the colon and port number HREF complete URL Pathname URL directory path part Port URL: Port Part Protocol URL Type (http:, ftp:, gopher:, etc.) Search is used to specify search information in the URL starting in question mark (?) Target User Click the link (TARGET feature), the window for displaying the contents of the referenced document B.20 Math object This object is not an attribute of other objects, but a built-in object that contains many mathematical constants and functions. Attributes E Euler constant, the bottom of natural logarithm (about 2.718) The natural logarithm of LN2 2 (about 0.693) LN10 10 natural logarithm (approximately equal to 2.302) Log2e is logged at 2-bottom E of E (about 1.442) Log10e is logged at 10-bottom E of E (about equal to O.434) The value of Pi π (approximately equal to 3.14159) Sqrt1_2 0.5 square root (ie L divided by 2 square roots, about equal) O.707) Sqrt2 2 square root (about 1.414) method ABS () returns a certain absolute value (ie the distance from O, for example, the absolute value of 2 and 2) is 2) ACOS () returns a number of anti-hosh values (in radians) Asin () returns a certain negative string value (in an arc) Atan () returns a number of annectable values (in arc) CEIL () returns a minimum integer that is equal, or greater than this number (CEIL (-22.22) returns to 23; CEIL22, 22) returns 23; CEIL (22) returns 22) COS () Returns the cosine value of a number (in an arc) Exp () Returns EN Floor () is the opposite of CEIL (FLOOR (one 22.22) returns a 23; floor (22.22) returns 22; floor (22) Returns 22) 10g () returns a number of natural logaries (bottom at E) Max () returns a larger value between two numbers MIN () returns a smaller value Pow () returns N times of M (where M is bottom, N is an index) Random () returns a pseudo number between 0 and 1 (this method is only in Netscape) Valid in the UNIX version of Navigator) Round () returns an integer after a number of rounds SIN () returns a sine value of a number (in an arc) SQRT () returns a square root Tan () returns a certain positive cut value B.2L Navigator object This object is not an attribute of other objects, but an built-in object contains information about the browser of the loading document. Attributes AppcodeName browser code name (for example, mozilla) The name of the appname browser Appversion browser version number UseERAGENT is sent by the client to the server and agent header text method There is currently no way in JavaEnabled JavaScript, but soon, it will add it to see if the browser is a browser compatible with JavaScript, if yes, continue to view whether JavaScript is in support status. B.22 OPTIONS array The array is a list of select objects, namely a list of all options in the Select box. Attributes DefaultSelected Options in the list of default options Index Options Index Location Number of options in the list of Length options (<options>) Name Options List Name (Name Features) SELECTED indicates a Boolean value selected in the list <option> in the list list. Selected <option> index (location) text option list in the selectedIndex Options list By <option> Nailed text Value = Features in the Value Options list B.23 Password object It is an attribute of the Document object, one <input type = "password"> tag. Attributes DefaultValue Password object default (value = feature) Name object's name (Name = features) Value This domain has the same current value as the value = feature (defaulttValue), however, if the script modifies the value in the domain, the value will change method FOCUS removes focus from this domain Blur moves focus to this domain SELECT Select the input area B.24 RADIO object It is an attribute of the Form object, a set of radio buttons in the form (option button) (<input type = "radio"). Attributes CHECKED check box or option button (radio button) status DefaultChecked check box or option button (radio button) default status The number of buttons in a set of radio buttons Name object's name (Name = features) Value value = characteristics method Click Analog Mouse Click the button Event handler Onclick click B.25 RESET object It is an attribute of the Form object, the reset button (<input type = "reset". Attributes Name object's name (Name = features) Value value = characteristics method Click Analog Mouse Click the button Event handler Onclick click B.26 SELECT object It is an attribute of the Form object, select box (<select>). Attributes Number of options in the list of Length options (<options>) Name Options List Name (Name Features) Number of options in the Options list The index of <option> selected in the selectedLndex option list (location) The text after the TEXT option list (Option) Value = Features in the Value Options list method BLUR puts the focus from the list of options FOCUS moves focus to the list of options Event handler An incident when Onblur loses focus ONCHANGE Change ONFOCUS Focus Event B.27 String object It is not an attribute of another object, but a built-in object, that is, a string of characters must be in the quotation marks in the input script. Attributes Number of characters in the Length string method Anchor () is used to convert a string to an HTML anchor mark (<a name=>) Big () turn the text in the string into a large font (<BIG>) Blink () turn the text in the string into a flash font (<blink>) Bold () turns the text in the string into a black font () Charat () looks for a character in the specified location in the string Fixed () turn the text in the string into fixed spacing fonts (<tt>) FontColor () change the color of the text in the string () FONTSIZE () turn the text in the string into specified size (<fontsize =>) IndexOf () is used to search for a special character in the string and return the index position of the character. Italics () turn the text in the string into oblique fonts () LastLndexOf () is similar to Indexof, but search the last character appearing backwards LINK () is used to convert a string to the HTML link tag (<a href=>) Small () turn the text in the string into a small font () Strike () turn the text in the string into the font (<strike>) Sub () turn the text in the string into subscript font ((sub>) Substring () Returns a part of the string between the specified location in the string SUP () turn the text in the string into a superscript font () TOLOWERCASE () turn the text in the string into a lowercase TouPpercase () turn the text in the string into uppercase B.28 SUBMIT object It is an attribute of the Form object, a submission button in the form (<input type = "submit"). Attributes Name object's name (Name = features) Value value = characteristics method Click Analog Mouse Click the button Event handler Onclick click B.29 Text object It is an attribute of the Form object, one of the text fields in the universe (<input type = "text">). Attributes DefaultValue Text Object Default (Value = Features) Name The name of this object (Name = Features) Value This domain has the current value of the value, which is the same as the value = feature, but if the script modifies the value in the domain, the value will change method BLUR puts the focus from the text box FOCUS moves focus to text boxes SELECT Select the input area Event handler Onblur lost focus event ONCHANGE Change ONFOCUS Focus Event OnseTelect selection event B.30 Textarea object It is an attribute of the Form object, a text area (<textarea>) in the neighborhood. Attributes DefaultValue TextArea object default (value = feature) Name The name of this object (Name = Features) Value This domain has the same current value, which is the same as value = characteristics, however, if the script modifies the value in the domain, the value will change. method BLUR puts the focus from the text area Focus moves focus to the text area SELECT Select Enter Zone Event Handle Event handler Onblur lost focus event ONCHANGE Change ONFOCUS Focus Event OnseTelect selection event B.31 WINDOW object It is a top-level object, rather than another object of the properties of the browser, the window of the browser. Attributes DefaultStatus default status bars Document currently displayed document (this property itself is also an object) A frame in the frame window (Frame>) (this property itself is also an object) Frames Array lists the array of frame objects of the window, listed in the order in which these objects appear in the document (this property itself is also an object) Historical list of the History window (this property itself is also an object) Number of frames in the Length window The complete (absolute) URL of the document displayed by the local window is also an object. Do not confuse it with Document.Location, the latter is the URL of the current display. Users can change Window.Location (replacing the current document with another document), but can not change the document.location (because this is the location of the current display) When the Name window opens, the name of the window is given. Opener represents the window where the script is opened using Window.Open (this is a new attribute introduced by Netscape Navigator 3.0beta 3) Parent contains synonyms of the window of the current frame. A property of Frame and Window objects Syntality of the Self Current window or framework Message in the Status Status TOP contains synonyms of the top browser window of the current frame The synonym of Window Current window or framework is the same as Self method Alert () Opens an Alert message box Cleartimeout () used to terminate the work of the SetTimeout method Close () close window Confirm () Opens a confirm message box, the user can select OK or Cancel, if the user clicks OK, the method returns true, click Cancel to return falseblur () to remove the focus from the specified window (this is the introduction of Netscape Navigator 3.0 Beta 3 New method) FOCUS () take the specified window to the front desk (another new method) Open () Opens a new window PROMPT () Opens a Prompt dialog that can be used to type text to the box and return the typed text to the script. 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