单项选择题
You create a Web page that contains the following code.
You need to ensure that when the user clicks an item in the list, the text color of the "Welcome!" message will change. Which declaration should you use?()
A.<ul id="color"> <li onclick="changeColor(this.innerText);">Black</li> <li onclick="changeColor(this.innerText);">Red</li> </ul>
B.<ul id="color"> <li onclick="changeColor(this.style.color);">Black</li> <li onclick="changeColor(this.style.color);">Red</li> </ul>
C.<ul id="color"> <li><a onfocus="changeColor(this.innerText);">Red</a></li> <li><a onfocus="changeColor(this.innerText);">Black</a></li> </ul>
D.<ul id="color"> <li><a onfocus="changeColor(this.innerText);">Red</a></li> <li><a onfocus="changeColor(this.innerText);">Black</a></li> </ul>
相关考题
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单项选择题
You create a Web page that contains the following code. You need to provide the following implementation. Each time the AddFile button is clicked, a new div element is created. The new div element is appended after the other file upload div elements and before the AddFile span. Each new element has a unique identifier. Which code segment should you use?()
A.$("#AddFile").click(function () {var id = "File" + ++lastId; var item =$(".File:first").clone(true); $("input:file", item).attr({ id: id, name: id }); item.insertBefore("#AddFile"); });
B.$("#AddFile").click(function () {var id = "File" + ++lastId;$(".File:first").clone(true).attr({ id: id, name: id }).insertBefore("#AddFile"); });
C.$("#AddFile").click(function () {var id = "File" + ++lastId; });
D.$("#AddFile").click(function () {var id = "File" + ++lastId;var item = $(".File:first").clone(true); $("input:file", item).attr({ id: id, name: id }); item.insertAfter("input[type=file]"); }); -
单项选择题
YoucreateaWebpagethatcontainsthefollowingdiv.YouhaveaJavaScriptarraynamedimageurlsthatcontainsalistofimageURLs.YouneedtowriteaJavaScriptfunctionthatwillinsertimagesfromtheURLsintotarget.Whichcodesegmentshouldyouuse?()
A.$(imageurls).each(function(i,url){ $("
", url).append("#target"); });
B.$(imageurls).each(function(i,url){ $("#target") += $("").attr("src", url); });
C.$.each(imageurls, function(i,url){ $("").attr("src", url).appendTo("#target"); });
D.$.each(imageurls, function(i,url){$("#target").append("").src = url; });
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单项选择题
A Web page includes the HTML shown in the following code segment. You need to write a JavaScript function that will dynamically format in boldface all of the hyperlinks in the ref span.Which code segment should you use?()
A.$("#ref").filter("a[href]").bold();
B.$("ref").filter("a").css("bold");
C.$("a").css({fontWeight:"bold"});
D.$("#ref a[href]").css({fontWeight:"bold"});
