Jquery取值賦值2
賦值：$("#keyword").val("aa");取值：/*获得TEXT.AREATEXT的值*/var textval = $("#text_id").attr("value");//或者var textval = $("#text_id").val();?/*获取单选按钮的值*/var valradio = $("input[type=radio]:checked").val();?/*获取一组名为(items)的radio被选中项的值*/var item = $('input[name=items]:checked').val();?/*获取复选框的值*/var checkboxval = $("#checkbox_id").attr("value")；?/*获取下拉列表的值*/var selectval = $('#select_id').val();?/*文本框，文本区域*/$("#text_id").attr("value",");//清空内容$("#text_id").attr("value",'test');//填充内容?/*多选框checkbox*/$("#chk_id").attr("checked",");//使其未勾选$("#chk_id").attr("checked",true);//勾选if($("#chk_id").attr('checked')==true) //判断是否已经选中?/*单选组radio*/$("input[type=radio]").attr("checked",'2');//设置value=2的项目为当前选中项?/*下拉框select*/$("#select_id").attr("value",'test');//设置value=test的项目为当前选中项$("testtest2").appendTo("#select_id")//添加下拉框的option$("#select_id").empty()；//清空下拉框?/*获取一组名为(items)的radio被选中项的值*/var item = $('input[name=items]:checked').val(); //若未被选中 则val() = undefined?/*获取select被选中项的文本*/var item = $("select[name=items] option:selected").text();?/*select下拉框的第二个元素为当前选中值*/$('#select_id')[0].selectedIndex = 1;?/*radio单选组的第二个元素为当前选中值*/$('input[name=items]').get(1).checked = true;?/*重置表单*/$("form").each(function(){.reset();});
