3.getElementsByName 例 3.1 getElementsByName()IEFF.html <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML> <head> <meta http-equiv="content-type" content="text/html; charset=utf-8"/> </HEAD> <BODY> <script type="text/javascript"> <!-- function choiceAll(t) { var arr = document.getElementsByName("ch"); for (var i=0;i<arr.length ;i++ ) { arr[i].checked = t } } //--> </script> <INPUT TYPE="checkbox" onclick="choiceAll(this.checked)" >全选<P> <INPUT TYPE="checkbox" NAME="ch"><BR> <INPUT TYPE="checkbox" NAME="ch"><BR> <INPUT TYPE="checkbox" NAME="ch"><BR> <INPUT TYPE="checkbox" NAME="ch"><BR> <INPUT TYPE="checkbox" NAME="ch"><BR> </BODY> </HTML>
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