單項選擇題

You create a Web page that contains the following image element.
You need to write a JavaScript function that will dynamically change which image is displayed. Which code segment should you use?（）

A.function changeImage（） {myImage.src = "image2.png"； }
B.function changeImage（） { document.getElementById（"myImage"）.src = "image2.png"； }
C.function changeImage（） { getElementById（"myImage"）.src = "image2.png"； }
D.function changeImage（） { window.getElementById（"myImage"）.src = "image2.png"； }

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單項選擇題

You create a Web page that contains drop-down menus that are defined by using div tags in the following code.

You need to write a JavaScript function that will enable the drop-down menus to activate when the user positions the mouse over the menu title. Which code segment should you use？（）

A.$（".dropdown-menu"）.hover（ function （） { $（".menu-items"）.slideDown（100）； }，function （） { $（".menu-items"）.slideUp（100）； } ）；
B.$（".dropdown-menu"）.hover（ function （） { $（".menu-items"， this）.slideDown（100）； }，function （）{ $（".menu-items"， this）.slideUp（100）； } ）；
C.$（".dropdown-menu"）.hover（ function （） { $（this）".slideDown（100）； }， function （） { $（this）.slideUp（100）； } ）；
D.$（".dropdown-menu"）.hover（ function （） { $（"this.menu-title"，）.slideDown（100）； }，function （） {$（"this.menu-title"，）.slideUp（100）； } ）；

單項選擇題

You are implementing a Web page that displays text that was typed by a user. You need to display the user input in the Web page so that a cross-site scripting attack will be prevented. What should you do？（）

A.Call document.write.
B.Call Response.Write.
C.Call HttpUtility.UrlEncode.
D.Call HttpUtility.HtmlEncode.

You create a Web page that contains the following image element. You need to write a JavaScript function that will dynamically change which image is displayed. Which code segment should you use?（）

你可能感興趣的試題

You create a Web page that contains drop-down menus that are defined by using div tags in the following code. You need to write a JavaScript function that will enable the drop-down menus to activate when the user positions the mouse over the menu title. Which code segment should you use？（）

You are implementing a Web page that displays text that was typed by a user. You need to display the user input in the Web page so that a cross-site scripting attack will be prevented. What should you do？（）

You create a Web page that contains the following image element.
You need to write a JavaScript function that will dynamically change which image is displayed. Which code segment should you use?（）

You create a Web page that contains drop-down menus that are defined by using div tags in the following code.

You need to write a JavaScript function that will enable the drop-down menus to activate when the user positions the mouse over the menu title. Which code segment should you use？（）

You are implementing a Web page that displays text that was typed by a user. You need to display the user input in the Web page so that a cross-site scripting attack will be prevented. What should you do？（）