Category Archives: JavaScript

JavaScript

01.28.13
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Basically, if you aren’t running Windows NT and your own Web site


Basically, if you aren’t running Windows NT and your own Web site, you’re better off looking at some of the other tools the Internet has to offer.
It’s a good idea to keep up with new tools, utilities, and helper programs as you embark into JavaScripting. The Internet is swelling with resources, many of which are free for the taking.
01.28.13
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The table of contents serves as your control center


The table of contents serves as your control center.Also all article links are listed here.
When the user passes the mouse over one of the links, a line of text describing that link appears in the browser’s status bar.
01.28.13
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One of the tremendous advantages of hypertext is its ability to link


One of the tremendous advantages of hypertext is its ability to link together many pieces of information in a nonlinear fashion.
However, sometimes this easy access to information can have unfortunate and cumbersome side effects.
01.28.13
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Sophisticated applications often require both data presentation


Sophisticated applications often require both data presentation and data storage/management capabilities. Unfortunately, information or parameter storage is particularly difficult.
In Netscape data may be temporarily saved between reloads using the location.search property, and also on the command line. In addition, both Netscape and Microsoft provide a persistent means of storage via cookies.
01.28.13
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Because Netscape is extremely security-conscious


Because Netscape is extremely security-conscious, it has made it difficult to store or load data-even between document reloads.One method of storing simple data between document reloads via a string saved in location.search.
This special location.search property is often referred to as the command line. A script can retrieve this string and redraw itself based on information in the string.
01.28.13
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Cookies are lines in a file that the browser enables you to write to disk


Cookies are lines in a file that the browser enables you to write to disk. This file will be named cookies.txt on a Windows machine, or just cookies on a UNIX or Macintosh. Under Netscape Navigator this file will be in your Netscape directory or folder. Cookies are limited in size and number.
Nevertheless, cookies are extremely useful. They are frequently used in the same way as a Windows .ini file, a Macintosh Preferences file, or a UNIX.rc file.
01.28.13
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When arraySubParms(astr) receives a string, it immediately finds the string’s length


When arraySubParms(astr) receives a string, it immediately finds the string’s length and uses that value to chop off the first character, which is the question mark (?), that starts the location.search string.
It then begins a loop that cycles through every character in the string with the statement ccstr = astr.substring
01.28.13
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The only method you can use to store variables


The only method you can use to store variables between invocations of Netscape Navigator and Internet Explorer v3 is the cookie approach. This is also the only approach that works with windows in different hierarchies.
Cookies were originally designed to enable a server to save information on the client’s disk but now they are available for the general use in javascript.
01.28.13
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Cookies were originally designed to enable a server to save information


Cookies were originally designed to enable a server to save information on the client’s disk. When the client contacted that same host at a later time, the previously saved cookie would be sent back to the server
Cookies are therefore useful if a browser connection is interrupted and you want to pick up where you left off. They are also useful in the event the server crashes and later wants to pick up where it left off. Cookies are now available for general use in JavaScript.
01.28.13
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Although servers can write named cookies one at a time


Although servers can write named cookies one at a time, JavaScript cannot. You can set an individual named cookie with the statement, document.cookie=’cookiename=xxxx’, but when you retrieve document.cookie, you get a string consisting of all of the cookies.
Currently, the only way to retrieve an individual cookie is to search through the entire set of cookies obtained from document.cookie. Consequently, it helps to add a prefix or suffix to the names of your cookies with little-used characters. This makes them easy to find with IndexOf().