ie浏览器typeerror对象不支持,textarea的属性

JQuery解析方法(function((/浏览器为placeholder属性if )！ (placeholder (in document.createelement ) input ) )使用placeholder的所有输入和文本输入[ placeholder ] textarea $ . each(function ) ) varthat=$(this ) vartext=that.attr(placeholder ' ) if ) that提示信息that.val(text ).addclass that.focus ) function ) )以清空if ({ { that.val )===text ) that.val )、removeclass )、placeholder )、that.csstive 添加提示信息if(that.val(===' ' ) ) that.val (text ).addclass )、placeholder )、that.CSS和color )，然后单击“# 9a 9791