编写一个程序，在一个窗口中创建多个窗口，即单击一个链接时会弹出对应的窗口3. 编写一个程序，设定三个文本框，一个div标签，一个“开始”按钮，一个“结束”按钮。用户给三个文本框分别输入三首歌曲名，当点击“开始”按钮后，每隔一秒钟依次从一个文本框取出一首歌曲名并放到div中进行显示，该过程重复进行，直到用户点击“结束”按钮时终止循环。

4.　　编写一个程序，定义一个学生姓名文本框，一个学生学号的文本框，一个打开另一个新窗口的按钮“打开新窗口”。当用户点击“打开新窗口”按钮时，会自动打开一个新窗口，并在新窗口中显示出，上一个窗口中输入的学生姓名和学生学号。

-Write a program in a window, to create multiple windows, or click a link to the corresponding window will pop up 3. Write a program, set the three text boxes, a div tag, a "Start" button, an "end "button. Three text boxes the user to enter three songs were, respectively, when click the "Start" button, followed by intervals of a second from a text box out a song name and put div carried out showed that the process is repeated until the user clicks on "end" button, the loop ends.

4. Write a program, define a student s name text box, a number of students learning the text box, a button to open another new window, "to open a new window." When the user clicks "Open New Window" button will automatically open a new window, and in a new window shows a window on the students enter the names and students to learn numbers.