<HTML>
<HEAD>
<TITLE> Using the For Statement </TITLE>
</HEAD>
<BODY>
<script> < ! - -
for (i = 1;i < 7;+ + i)
{
document.write("< H"+ i+ "> This is a level" + i + "heading. "+ "< /H"+ i+ " >")
}
- - > </script>
</BODY>
</HTML>
此程序运行后死循环了;<HTML>
<HEAD>
<TITLE> Using the While Statement </TITLE>
</HEAD> <BODY>
<script>
<! - -
i = 1
while( i < 7)
{
document.write("< H"+ i+ "> This is a level" + i + "heading. "+ "< /H"+ i+ " >")
+ + i
}
- - > </script>
</BODY>
</HTML>
此显示语法错误。
<HEAD>
<TITLE> Using the For Statement </TITLE>
</HEAD>
<BODY>
<script> < ! - -
for (i = 1;i < 7;+ + i)
{
document.write("< H"+ i+ "> This is a level" + i + "heading. "+ "< /H"+ i+ " >")
}
- - > </script>
</BODY>
</HTML>
此程序运行后死循环了;<HTML>
<HEAD>
<TITLE> Using the While Statement </TITLE>
</HEAD> <BODY>
<script>
<! - -
i = 1
while( i < 7)
{
document.write("< H"+ i+ "> This is a level" + i + "heading. "+ "< /H"+ i+ " >")
+ + i
}
- - > </script>
</BODY>
</HTML>
此显示语法错误。
<HTML>
<HEAD>
<TITLE> Using the For Statement </TITLE>
</HEAD>
<BODY>
<script>
for (i = 1;i < 7;++i)
{
document.write("<H"+ i+ "> This is a level" + i + "heading. "+ "</H"+ i+ ">")
}
</script>
</BODY>
</HTML
{
document.write("<H"+ i+ "> This is a level" + i + "heading. "+ "</H"+ i+ " >")
}var i = 1;
while(i < 7)
{
document.write("<H"+ i+ "> This is a level" + i + "heading. "+ "</H"+ i+ ">")
++i;
}