<input  id="selectAll" type="checkbox" />全选

<input type='checkbox' id='id1' name='cb' value='1' />value1

<input type='checkbox' id='id2' name='cb' value='2' />value2

<input type='checkbox' id='id3' name='cb' value='3' />value3 

//全选框

    jQuery(function () {

        jQuery("#selectAll").click(function () {  //全选

                    if (this.checked) {

                        jQuery("input[name='cb']").each(function () {

                            this.checked = true;

                        });

                    } else {   //取消全选

                        jQuery("input[name='cb']").each(function () {

                            this.checked = false;

                        });

                    }

                }

        );

    });

//全选框

    jQuery(function () {

        jQuery("#selectAll").click(function () {  //全选

                   jQuery("input[name='cb']").attr("checked", true);

                    } else {   //取消全选

                        jQuery("input[name='cb']").attr("checked", true);

                    }

                }

        );

    });