jquery全选反选

    xiaoxiao2025-06-24  6

    <!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=gb2312" /> <title>无标题文档</title> </head> <script language=javascript src="jquery.js"></script> <SCRIPT LANGUAGE="JavaScript"> <!--     $("document").ready(function(){             $("#all").click(function(){         if(this.checked){             $("input[name='checkbox']").each(function(){this.checked=true;});  $("#btn1").attr("value","反选");         }else{             $("input[name='checkbox']").each(function(){this.checked=false;});             $("#btn1").attr("value","全选");       }      }); 

         $("#btn1").click(function(){                   $("[name='checkbox']").attr("checked",'true');//全选              })      $("#btn2").click(function(){                      $("[name='checkbox']").removeAttr("checked");//取消全选             })        $("#btn3").click(function(){                     $("[name='checkbox']:even").attr("checked",'true');//选中所有奇数               })        $("#btn4").click(function(){                      $("[name='checkbox']").each(function(){                                           if($(this).attr("checked"))             {               $(this).removeAttr("checked");                             }            else            {              $(this).attr("checked",'true');                            }                      })                 })         $("#btn5").click(function(){       var str="";           $("[name='checkbox'][checked]").each(function(){              str+=$(this).val()+"/r/n";          })        alert(str);     })       })  //-->  </SCRIPT> <BODY> <form name="form1" method="post" action="">   <input type="checkbox" id="all" name="all">   <input type="button" id="btn1" value="全选">   <input type="button" id="btn2" value="取消全选">    <input type="button" id="btn3" value="选中所有奇数">   <input type="button" id="btn4" value="反选">   <input type="button" id="btn5" value="获得选中的所有值">    <br>   <input type="checkbox" name="checkbox" value="checkbox1">   checkbox1    <input type="checkbox" name="checkbox" value="checkbox2">  checkbox2    <input type="checkbox" name="checkbox" value="checkbox3">   checkbox3    <input type="checkbox" name="checkbox" value="checkbox4">    checkbox4   <input type="checkbox" name="checkbox" value="checkbox5">    checkbox5    <input type="checkbox" name="checkbox" value="checkbox6">    checkbox6   <input type="checkbox" name="checkbox" value="checkbox7">   checkbox7    <input type="checkbox" name="checkbox" value="checkbox8">  checkbox8  </form>  </BODY> </html>

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