1、实验二简单JavaScript的程序实现、实验目的1）理解JavaScript的程序结构；2）掌握JavaScript的语法、数据类型和变量;3）理解JavaScript编程的流程控制；4）掌握JavavScript函数的使用。二.实验要求1）下述程序都有错误，请调试程序并观察效果。2）总结程序中使用了哪些控制方法和函数。3）在实验报告中写出每个程序实现的功能及程序错误所在，并加以纠正。三、实验内容1、验证程序1运行界面如下:代码如下：〈head〉functionclickalert(){alert(〃这是一个用了什么技术的警告框
看看这是什么?〈/body〉2、验证程序2运行界面如下:z3九九乗法表-MicrosoftInternetExplorer・1口1x3、文件（巳编辑（或查看（刃收藏（①工具（D帮助（b）©后退▼O▼国団0Q搜素☆收藏夹创3地址(Q)
4、自D:WebExample2.htmF③目转到捱接》建▼这个程序可以打印出九九表如下:1*111*221*331*4=41*5=51*6=61*7=71*8=81*9=92*122*242*362*4=82*5=102*6=
5、122*7二142*8二162*9二183*133*263*393*4=123*5=153*6=183*7=213*8=243*9=274*144*284*3124*4二164*5二204*6二244*7=284*8二324*9二365*155*2105*3155*4=205*5=255*6=305*7=355*8二405*9二456*166*2126*3186*4=246*5=306*6=366*7=426*8二486*9二547*177*2147*3217*4二287*5二357*6二427*7二497*8二567*9二638*188*2168*3248*4=328*5=408*6=
6、488*7=568*8二648*9二729*199*2189*3279*4=369*5二459*6二549*7二639*8=729*9=81鬲完毕—「厂「厂口貓电脑乙代码如下：〈html>九九乘法表〈/title><scriptlanguage="JavaScript">document.write("这个程序可以打印宙九九表如下:<br>”);for(i二1;i<=9;i++){for(j=l;j<=9;j^){varnum二i*j;document,write(i,〃*",j,"二","num："“)；(引号去掉)document.writeC<br>9；<</p><p>7、/script>〈/head〉</html>3、验证程序3运行界面如下:文件（巳编辑（Q查看（S0收藏（①工具（D帮助（LDO启退▼j▼0固</p><p>8、J3:搜素二］地址（◎</p><p style="height:0px;padding:0;margin:0;overflow:hidden">9、於［D:阴ebE心mple6ht▼］I⑨^3转到链接parseint0转化后的数：289pairseFloat〔）转化后的数：289.45parseFloat（）转化后的薮：289parseFloat（）转化后的数：NaN代码如下：〈head〉<title>varstringl=289abvarstring2=^289.45ab";varstring
10、3二"abc";documcnt.writo("parseInt()转化后的数::parseint(stringl),"
〃);document.write("pnrseFloat0转化后的数:”,parseFloat(string2),"
");document.write("parseFloat0转化后的数::parseFloat(stringl),〃
〃);document.write(^parseFloat()转化后的数::parseFloat(string3));〈/script〉〈body〉4、验证程序4运行界面如下:我的电脑代码如下：〈htm
11、l>数组的使用〈/title></head>〈body〉<scriptlanguage^"JavaScript">//创建三个不同的数组vararrayl=newArray(1,2,3,4,5,6,7,8,9);vararray2=newArray(3);array2[0]二〃A";array2[1]二〃S〃;array2[2]="P”;vararray3=newArray();array3[0]=''Yo</p> </div>
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