实例:表单验证
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实例:用户调查表
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>Insert title here</title> <script type="text/javascript"> function show(){ var f=document.forms["myForm"]; var x=""; x +="姓名 "+f.name.value+"<br>";; for(i=0;i<f.sex.length;i++){ if(f.sex[i].checked){ x += f.sex[i].value+"<br>";; } } x += "喜欢的爱好:"; for(i=0;i<f.inst.length;i++){ if(f.inst[i].checked){ x += f.inst[i].value+"、"; } } document.getElementById("demo").innerHTML=x; } </script> </head> <body> <form name="myForm" action="" method="post"> 姓名:<input type="text" name="name" size="6"> <br> 性别:<input type="radio" name="sex" value="男" checked="checked"> 男 <input type="radio" name="sex" value="女">女 <br> 兴趣:<input type="checkbox" name="inst" value="游泳" checked="checked">游泳 <input type="checkbox" name="inst" value="滑冰">滑冰 <input type="checkbox" name="inst" value="编程">编程 <input type="button" value="显示" onclick="show()"> </form> <p id="demo"></p> </body> </html>