JavaScript基础
2014-11-15 03:11
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>javascript基础</title> <script type="text/javascript"> function show() { alert("js学习之旅!"); } </script> <script src="jsfile.js" type="text/javascript"> </script> <script type="text/javascript"> var p = 3.14; function compute(r) { return 2*p*r*r; } function show3() { var r = document.getElementById("radius").value; var area = compute(r); document.getElementById("area").value=area; } </script> <script type="text/javascript> //这个有点问题 显示不出来 function show4() { confirm("确认提交吗?") prompt("提示。。。。") } </script> </head> <body onload="show2()"> <script type="text/javascript"> document.write("js学习"); </script> <form> 输入半径:<input type="text"; name="r" id="radius"> <input type="button" value="计算" onclick="show3()"> 圆的面积:<input type="text" name="area" id="area"> </form> <input type="text"; name="确认框 提示框" onclick="show4()"> </body> </html>
//外部js文件代码 function show2() { alert("js2222学习之旅!"); }