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Programming Scripts Articles
Page 13 of 33
How can I access document properties using Legacy DOM method in JavaScript?
To access document properties using Legacy DOM method in JavaScript, you can try to run the following code −Example Document Title This is main title Click the following to see the result:
Read MoreHow objects are organized in a web document? How is it arranged in a hierarchy?
The Objects are organized in a hierarchy. This hierarchical structure applies to the organization of objects in a Web document.Window object − Top of the hierarchy. It is the utmost element of the object hierarchy.Document object − Each HTML document that gets loaded into a window becomes a document object. The document contains the contents of the page.Form object − Everything enclosed in the ... tags sets the form object.Form control elements − The form object contains all the elements defined for that object such as text fields, buttons, radio buttons, and checkboxes.The following is a simple hierarchy of a ...
Read MoreWhat are the document methods supported by Legacy DOM?
The following is the list of document methods supported by Legacy DOM −Sr.NoProperty & Description1clear( )Deprecated − Erases the contents of the document and returns nothing.Ex − document.clear( )2close( )Closes a document stream opened with the open( ) method and returns nothing.Ex − document.close( )3open( )Deletes existing document content and opens a stream to which new document contents may be written. Returns nothing.Ex − document.open( )4write( value, ...)Inserts the specified string or strings into the document currently being parsed or appends to document opened with open( ). Returns nothing.Ex − document.write( value, ...)5writeln( value, ...)Identical to write( ), except that ...
Read MoreWhat is the role of special characters in JavaScript Regular Expressions?
The frequency or position of bracketed character sequences and single characters can be denoted by a special character. Each special character has a specific connotation. The +, *, ?, and $ flags all follow a character sequence.Sr.NoExpression & Description1p+It matches any string containing one or more p's.2p*It matches any string containing zero or more p's.3p?It matches any string containing at most one p.4p{N}It matches any string containing a sequence of N p's5p{2, 3}It matches any string containing a sequence of two or three p's.6p{2, }It matches any string containing a sequence of at least two p's.7p$It matches any string with p ...
Read MoreHow to access document properties using W3C DOM method?
This IE4 document object model (DOM) introduced in Version 4 of Microsoft's Internet Explorer browser. IE 5 and later versions include support for most basic W3C DOM features.ExampleTo access document properties using W3C DOM method, you can try to run the following code − Document Title This is main title Click the following to see the result:
Read MoreHow to get the list of document properties which can be accessed using W3C DOM?
The following are the document properties which can be accessed using W3C DOM −Sr.NoProperty & Description1BodyA reference to the Element object that represents the tag of this document.Ex − document.body2DefaultViewIts Read-only property and represents the window in which the document is displayed.Ex − document.defaultView3DocumentElementA read-only reference to the tag of the document.Ex − document.documentElement8/31/20084ImplementationIt is a read-only property and represents the DOMImplementation object that represents the implementation that created this document.Ex − document.implementation
Read MoreHow to reduce the number of errors in scripts?
To reduce the number of errors in scripts, follow the below-given tips −Use plenty of comments. Comments enable you to explain why you wrote the script the way you did and to explain particularly difficult sections of code.Always use indentation to make your code easy to read. Indenting statements also make it easier for you to match up the beginning and ending tags, curly braces, and other HTML and script elements.Write modular code. Whenever possible, group your statements into functions. Functions let you group related statements, and test and reuse portions of code with minimal effort.Be consistent in the way you ...
Read MoreWith JavaScript how can I find the name of the web browser, with version?
To find the name of the web browser, with version, you need to try the following code −Example Browser Detection Example
Read Morevolatile keyword in C#
To reduce concurrency issues in C#, use the volatile keyword. Let us seen an example.The following is how you use a volatile keyword for public variable −class Program { public volatile int a; public void Program(int _a) { i = _i; } }Let us see another example: We have two static variables. Set them in a new method −_out = "Welcome!"; _new = true;We declared them as static before using volatile −static string _out; static volatile bool new;Now you need to run the method on a thread −new Thread(new ThreadStart(volatileFunc)).Start();Read the value of the ...
Read MoreAdding an element in an array using Javascript
Adding an element to an array can be done using different functions for different positions.Adding an element at the end of the arrayThis can be accomplished using the push method. For example, let veggies = ["Onion", "Raddish"]; veggies.push("Cabbage"); console.log(veggies);This will give the output −["Onion", "Raddish", "Cabbage"]You can also use this to push multiple items at the same time as it supports a variable number ofarguments. For example, let veggies = ["Onion", "Raddish"]; veggies.push("Cabbage", "Carrot", "Broccoli"); console.log(veggies);This will give the output −["Onion", "Raddish", "Cabbage", "Carrot", "Broccoli"]Adding an element at the start of the arrayThis can be accomplished using the unshift method. ...
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