.NET/ASP.NET/C#/VB.NET PDF Document SDK

Over the years this game has been called many things. Electronic Surfboard is the most imaginative, but The Steady Hand Game seems a little mundane. It s a dexterity game in which you try to pass a small loop of wire over a second wire from one end to the other without touching it. To make things challenging, the second wire is bent randomly around like waves, hence the surfing theme. If the game is too easy, simply make the loop smaller.

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4 demonstrated how to build a simple autocomplete feature in which a drop-down list would appear with a list of suggestions each time the user typed into a text box, la Google Suggest. The search component of the Ajax Dashboard builds on this example. Unlike the example from 4, which used hard-coded search results, this example uses the Yahoo! Search API to perform the search. The Ajax Dashboard also uses the Taconite framework to build the search results. Listing 8-13 is an excerpt from the autoComplete.html example from 4. The function shown in Listing 8-13 is the function responsible for building the results drop-down list. Listing 8-13. Excerpt of autoComplete.html Example from 4 function setNames(the_names) { clearNames(); var size = the_names.length; setOffsets(); var row, cell, txtNode; for (var i = 0; i < size; i++) { var nextNode = the_names[i].firstChild.data; row = document.createElement("tr"); cell = document.createElement("td"); cell.onmouseout = function() {this.className='mouseOver';}; cell.onmouseover = function() {this.className='mouseOut';}; cell.setAttribute("bgcolor", "#FFFAFA"); cell.setAttribute("border", "0"); cell.onclick = function() { populateName(this); } ; txtNode = document.createTextNode(nextNode); cell.appendChild(txtNode); row.appendChild(cell); nameTableBody.appendChild(row); } }

I Note Interestingly, at the IL level, there is no real concept of namespaces. A name of a class or module is

Construction of the game is simple enough to figure out using only the photograph in Figure 4-4. We used heavy 12-gauge (3mm2) house wire for the loop and waves, but you could use much lighter singlestrand hook-up wire if you wanted to.

The set_names function is responsible for reading the XML returned by the server and building the results The JavaScript in the set_names function isn t particularly hard; it s just tedious and an unnatural way to write HTML content Remember, though, that building the onmouseover, onmouseout, and onclick event handlers required nonstandard code; otherwise, it wouldn t work in all major browsers Had you not known the workaround, you may not have figured out why the example worked in some browsers but not others Now, compare the code in Listing 8-13 with the code in Listing 8-14, which shows searchAutocompletejsp Listing 8-14 demonstrates how you build the content of the results drop-down list using the Taconite framework Listing 8-14 searchAutocompletejsp <%@ taglib uri="http://javasuncom/jsp/jstl/core" prefix="c"%> <%@ taglib uri="http://taconitesfnet/tags" prefix="tac" %> <tac:taconiteRoot> <tac:replaceChildren contextNodeID="popup" parseOnServer="true"> <c:forEach var="result" items="${results}"> <div onmouseover="hilite(this);" onmouseout="unhilite(this);"> <a href="${result.

just a long identifier that might or might not contain dots. Namespaces are implemented at the compiler level. When you use an open directive, you tell the compiler to do some extra work; to qualify all your identifiers with the given name, if it needs to; and to see whether this results in a match with a value or type.

In the elementary school version of the game, touching the wires together completes a circuit that has a buzzer in series with a battery. Our wires are connected to a 32-bit computer, so you might expect a little more than a buzz. Referring to the NXT-G program in Figure 4-5, the number of times the wires touch is counted up to a maximum limit. The display is animated, and a dramatic Ouch is played whenever there is a touch. Finally, if the limit of touches is reached, the Game Over phrase is uttered.