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How to create arrays in JavaScript?
How to create arrays in JavaScript? We can declare an array like this var scripts = new Array(); We can add elements to this array like this scripts[0] = "PHP"; scripts[1] = "ASP"; scripts[2] = "JavaScript"; scripts[3] = "HTML"; Now our array scrips has 4 elements inside it and we can print or acces... 2010-06-22, 4010👍, 0💬

What does break and continue statements do?
What does break and continue statements do? Continue statement continues the current loop (if label not specified) in a new iteration whereas break statement exits the current loop. 2011-08-16, 3999👍, 0💬

How to put a "close window" link on a page?
How to put a "close window" link on a page? &lt;a href='javascript:window.close( )'class='mainnav'> Close &lt;/a> 2010-11-30, 3991👍, 0💬

What does isNaN function do?
What does isNaN function do? Return true if the argument is not a number. 2010-08-03, 3984👍, 0💬

How to create a function using function constructor?
How to create a function using function constructor? The following example illustrates this. It creates a function called square with argument x and returns x multiplied by itself. var square = new Function ("x","return x*x"); 2011-08-16, 3982👍, 0💬

Where are cookies actually stored on the hard disk?
Where are cookies actually stored on the hard disk? This depends on the user's browser and OS. In the case of Netscape with Windows, all the cookies are stored in a single file called cookies.txt c:\Program Files\Netscape\Users\username\ cookies.txtIn the case of IE, each cookie is stored in a separ... 2010-07-20, 3981👍, 0💬

Methods GET and POST in HTML forms - what's the difference?.
Methods GET and POST in HTML forms - what's the difference?. GET: Parameters are passed in the querystring. Maximum amount of data that can be sent via the GET method is limited to about 2kb. POST: Parameters are passed in the request body. There is no limit to the amount of data that can be transfe... 2010-08-17, 3978👍, 0💬

What does JavaScript null mean?
What does JavaScript null mean? The null value is a unique value representing no value or no object. It implies no object, or null string, no valid boolean value, no number and no array object. 2010-12-14, 3973👍, 0💬

The eval() method is incredibly powerful because it:
The eval() method is incredibly powerful because it: A) allows you to execute snippets of code during execution. B) allows you to evaluate for enough resources. C) allows you to evaluate and validate user input. D) all of the above. 2010-08-28, 3972👍, 0💬

How to write a script manage a list using JavaScript?
How to write a script manage a list using JavaScript? 1. To remove an item from a list: set it to null: myList[3] = null; 2. To truncate a list: reset the length property: myList.length = 2; 3. To delete all items in a list, set the length to 0: myList.length = 0; 2010-08-24, 3970👍, 0💬

What does undefined value mean in JavaScript?
What does undefined value mean in JavaScript? Undefined value means the variable used in the code doesn't exist or is not assigned any value, or the property doesnt exist. 2011-01-18, 3967👍, 0💬

What are the problems associated with using JavaScript, and are there JavaScript techniques that you discourage?
What are the problems associated with using JavaScript, and are there JavaScript techniques that you discourage? Browser version incompatibility is the biggest problem. It requires knowing how each scriptable browser version implements its object model. You see, the incompatibility rarely has to do ... 2010-09-21, 3964👍, 0💬

Example of using Regular Expressions for syntax checking in JavaScript
Example of using Regular Expressions for syntax checking in JavaScript ... var re = new RegExp("^(&[A-Za-z_0-9]{1, }=[A-Za-z_0-9]{1,})*$");var text = myWidget.value; var OK = re.test(text); if( ! OK ) { alert("The extra parameters need some work.\r\n Should be something like: \"&a=1&c=4\... 2010-07-13, 3959👍, 0💬

Taking a developer’s perspective, do you think that that JavaScript is easy to learn and use?
Taking a developer’s perspective, do you think that that JavaScript is easy to learn and use? I think JavaScript is easy to learn. One of the reasons JavaScript has the word "script" in it is that as a programming language, the vocabulary of the core language is compact compared to full-fledged prog... 2010-11-09, 3949👍, 0💬

How to get values from cookies to set widgets?
How to get values from cookies to set widgets? function getCookieData(labelName) { //from Danny Goodman var labelLen = labelName.length; // read cookie property only once for speed var cookieData = document.cookie; var cLen = cookieData.length; var i = 0; var cEnd; while (i &lt; cLen) { var j = ... 2011-05-24, 3944👍, 0💬

How to create an input box?
How to create an input box? prompt("What is your temperature?"); 2011-03-08, 3942👍, 0💬

What Web sites do you feel use JavaScript most effectively (i.e., best-in-class examples)? The worst?
What Web sites do you feel use JavaScript most effectively (i.e., best-in-class examples)? The worst? The best sites are the ones that use JavaScript so transparently, that I'm not aware that there is any scripting on the page. The worst sites are those that try to impress me with how much scripting... 2010-11-09, 3938👍, 0💬

What’s a quick way to append a value to an array?
What’s a quick way to append a value to an array? arr[arr.length] = value; 2010-12-28, 3937👍, 0💬

What is a prompt box?
What is a prompt box? A prompt box allows the user to enter input by providing a text box. 2010-11-02, 3932👍, 0💬

How to add Buttons in JavaScript?
How to add Buttons in JavaScript? The most basic and ancient use of buttons are the "submit" and "clear", which appear slightly before the Pleistocene period. Notice when the "GO!" button is pressed it submits itself to itself and appends the name in the URL. &lt;form action="" name="buttonsGalo... 2010-07-13, 3923👍, 0💬

How to make a array as a stack using JavaScript?
How to make a array as a stack using JavaScript? The pop() and push() functions turn a harmless array into a stack: &lt;script type="text/javascript"> var numbers = ["one", "two", "three", "four"]; numbers.push("five"); numbers.push("six"); document.write(numbers.pop()); document.write(numbers.p... 2011-07-26, 3918👍, 0💬

What does the term sticky session mean in a web-farm scenario?
What does the term sticky session mean in a web-farm scenario? Why would you use a sticky session? What is the potential disadvantage of using a sticky session? Sticky session refers to the feature of many commercial load balancing solutions for web-farms to route the requests for a particular sessi... 2011-01-04, 3913👍, 0💬

What is the difference between undefined value and null value?
What is the difference between undefined value and null value? Undefined value cannot be explicitly stated that is there is no keyword called undefined whereas null value has keyword called null. typeof undefined variable or property returns undefined whereas typeof null value returns object 2011-01-18, 3907👍, 0💬

What is a fixed-width table and its advantages?
What is a fixed-width table and its advantages? Fixed width tables are rendered by the browser based on the widths of the columns in the first row, resulting in a faster display in case of large tables. Use the CSS style table-layout:fixed to specify a fixed width table. If the table is not specifie... 2010-07-06, 3904👍, 0💬

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.NET C C++ CSS DBA General HTML Java JavaScript JSP JUnit MySQL Networking Oracle Perl Perl PHP PL/SQL RSS Software QA SQL Server Struts Unix Windows XHTML XML