一个简单的全选问题
<!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>无标题文档</title><script type="text/javascript"> function checked(){ var all=document.getElementsByName("one"); for(var i=0;i<all.length;i++){ if(document.getElementById("all").checked==true) { all[i].checked=true; } else { all[i].checked=false; } } }</script></head><body>全选<input id="all" type="checkbox" onclick="checked();"/> <p> <input name="one" type="checkbox" /> </p> <p><input name="one" type="checkbox" /> </p> <p><input name="one" type="checkbox" /> </p></body></html>