js代码// JavaScript Document
function insertParagraph(text){
var str = "<p>";
str += text;
srt+="</p>";
document.write(str);
}html代码<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html lang="en" xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Test</title>
</head><body>
<script type="text/javascript" src="example.js"></script>
<script type="text/javascript">
insertParagraph("This is inserted.");
</script>
</body>
</html>调试结果
function insertParagraph(text){
var str = "<p>";
str += text;
srt+="</p>";
document.write(str);
}html代码<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html lang="en" xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Test</title>
</head><body>
<script type="text/javascript" src="example.js"></script>
<script type="text/javascript">
insertParagraph("This is inserted.");
</script>
</body>
</html>调试结果
srt+="</p>";缺少对象!怎么回事!?
多练习吧,错得多了以后再看到"srt未定义"这种错误信息时,就会马上意识到错在什么地方的。