How to Apply jQuery on Textbox and Checkbox

Apply jquery on Textbox

1. SharePoint TextBox

<SharePoint:FormField runat="server" id="ff30{$Pos}" ControlMode="Edit" FieldName="FieldName1" __designer:bind="{ddwrt:DataBind('u',concat('ff30',$Pos),'Value','ValueChanged','ID',ddwrt:EscapeDelims(string(@ID)),'@FieldName1')}"/>
  * $("input[title='[Field title name']']").val();
  * alert($("input[title='FieldName1']").val());

2. Asp Control TextBox 

<asp:TextBox runat="server" ID="txtbxID" CssClass="txtbxStyle" MaxLength="255"></asp:TextBox>
   * alert($("#<%= txtbxID.ClientID %>").val());
   * alert($('.txtbxStyle').val());
   * alert($("input[id$='txtbxemailid']").val());

 3. HTML Control

<input type="text" id="txtbxID" class="textbxClass" />
   * alert($("#<%= txtbxID%>").val());
   * alert($('.textbxClass').val());
   * alert($("#txtbxID").val());

Apply jquery on Checkbox 

SharePoint TextBox

<SharePoint:FormField runat="server" id="ff30{$Pos}" ControlMode="Edit" FieldName="FieldName1" __designer:bind="{ddwrt:DataBind('u',concat('ff30',$Pos),'Value','ValueChanged','ID',ddwrt:EscapeDelims(string(@ID)),'@FieldName1')}"/>
* $("input[title='[Field title name']']").val();
* alert($("input[title='FieldName1']").val());