TAILIEUCHUNG - JavaScript Bible, Gold Edition part 147

JavaScript Bible, Gold Edition part 147. This book will bring programmers and non-technical professionals, including casual programmers and scripters, painlessly up to speed on all aspects of mastering JavaScript. Key topics include programming fundamentals, JavaScript language elements and how to use them effectively, and how to easily and efficiently add powerful new functionality to HTML documents and Java applets. | 1308 Part V Putting JavaScript to Work According to an article in the CITE Wall Street Journal CITE the first three digits of a . Social Security number is a code for the state or territory in which your application stated you were born. For recent immigrants the number is supposed to match up with the state or territory in which you were living when you received proper working papers. P Note The database in this document is not 100 percent complete. Populous states have added numeric ranges not contained here. P Instructions OL LI Enter the first three digits of a . Social Security number in question. LI LI Click on the Search button. LI LI See the corresponding state or territory in the field. L1 OL P B For the paranoid B No information you enter here is recorded or monitored it stays entirely within your browser. P HR The form s onSubmit event handler is set to prevent accidental submission or pseudo-submission because no ACTION attribute is specified for the form that IE Mac does from any form s text box other browsers submit on Return from only a single-field form . Each of the text objects is sized to fit the expected data. A handful of event handlers invoke the search function directly and indirectly passing a reference to the form as a parameter. FORM onSubmit return false Enter the first B three B digits of a Social Security number INPUT TYPE text NAME entry SIZE 4 onKeyPress return searchOnReturn event onChange search INPUT TYPE button VALUE Search onClick search P The Feds link this number to INPUT TYPE text NAME result SIZE 50 FORM BODY HTML Further Thoughts If I were doing this type of application for production purposes I would turn each pairing of range high number and geographical location into separate objects and store the objects in an array. Making that technique work requires one extra function and a different way of populating the data. The following is an example using the same variable names as the .

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