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1426 Introduction to HyperText Markup Language 4: (Web hosting directory) Part

1426 Introduction to HyperText Markup Language 4: Part 2 Appendix J A Web server is a machine that runs a software package like Apache or IIS; servers are designed to handle browser requests. When a user uses a browser to request a page or file somewhere on the server, the server processes this request and returns an answer to the browser. The action attribute in the formtag is the path to a script that processes the form data. The input element is common in forms and always requires the type attribute. Two other attributes are name, which provides a unique identification for the input, and value, which indicates the value that the inputelement sends to the server upon submission. The input type=”text” inserts a one-line text bar into the form. The value of this input element and the information that the server sends to you from this input is the text that the user types into the bar. The sizeattribute determines the width of the text input, measured in characters. You can also set a maximum number of characters that the text input will accept by inserting the maxlength=”length” attribute. You must make sure to include a label element for each form element to indicate the function of the element. The type=”submit”input element places a button in the form that submits data to the server when clicked. The value attribute of the submitinput changes the text displayed on the button. The type=”reset” input element places a button on the form that, when clicked, will clear all entries the user has entered into the form. The textarea element inserts a box into the form. You specify the size of the box (which is scrollable) inside the opening tag with the rows attribute and the cols attribute. Data entered in a type=”password” input appears on the screen as asterisks. The password is used for submitting sensitive information that the user would not want others to be able to read. It is just the browser that displays asterisks the real form data is still submitted to the server. Every input element with type=”checkbox” creates a new checkbox in the form. Checkboxes can be used individually or in groups. Each checkbox in a group should have the same name (in this case, name=”things”). Inserted into forms by means of the input attribute type=”radio”, radio buttons are different from checkboxes in that only one in the group may be selected at any time. All of the name attributes of a group of radio inputs must be the same and all of the value attributes different. Insert the attribute checkedto indicate which radio button you would like selected initially. The select element places a selectable list of items inside your form. To add an item to the list, insert an option element in the<br /> <select> </select> <p>area and type what you want the list item to display on the same line. You can change the number of list options visible at one time by including the size=”size” attribute inside the<br /> <select> tag. Use this attribute if you prefer an expanded version of the list to the one-line expandable list. A location on a page is marked by including a name attribute in an a element. Clicking this hyperlink in a browser would scroll the browser window to that point on the page. An image map allows you to designate certain sections of the image as hotspots and then use these hotspots as anchors for linking. All elements of an image map are contained inside the <map> </map> tags. The required attribute for the map element is name. A hotspot on the image is designated with the area element. Every <area> tag has the following attributes: href sets the target for the link on that spot, shape and coords set the characteristics of the area and alt function just as it does in <img> tags. shape=”rect”creates a rectangular hotspot around the coordinates of a coords element. <br />Searching for affordable and proven webhost to host and run your servlet applications? Go to <a href="http://linux.a1websitehosting.net">Linux Web Hosting</a> services and you will find it. </p> <p class="postmetadata alt"> <small> This entry was posted on Monday, January 28th, 2008 at 10:07 am and is filed under <a href="http://tomcat.a1websitehosting.net/category/tomcat/" title="View all posts in Tomcat" rel="category tag">Tomcat</a>. You can follow any responses to this entry through the <a href='http://tomcat.a1websitehosting.net/tomcat/1426-introduction-to-hypertext-markup-language-4-web-hosting-directory-part/feed/'>RSS 2.0</a> feed. 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