Simple Example of Ajax Implementation of level-2 interaction in Spring MVC, mvcajax

Simple Example of Ajax Implementation of level-2 interaction in Spring MVC, mvcajax

Today, I encountered a second-level linkage when I was writing a project. I encountered some problems during this period and wrote a blog record.

Background Controller:

@ RequestMapping ("/faultType") @ ResponseBodypublic Map <String, Object> faultType (int id, HttpServletRequest request) throws IOException {String ReturnMessage = ""; // obtain the List of all subclass fault types <FaultType> fauList = faultTypeService. getById (id); if (fauList. size ()> 0) {request. setAttribute ("childType", fauList); ReturnMessage = "OK";} else {ReturnMessage = "No information found ";} //************************************** * ********************** Map <String, object> ReturnMAP = new HashMap <String, Object> (); ReturnMAP. put ("childType", fauList); return ReturnMAP ;}

Foreground JSP:

<Div class = "col-sm-3"> <div class = "form-group"> <label class = "col-3 control-label no-padding-right"> fault type: </label> <select name = "faulttype" id = "faulttype" onchange = "javascript: typeChange ()"> <c: forEach items = "$ {faultlist}" var = "faulist"> <option value = "$ {faulist. faultId} ">$ {faulist. faultContent} </option> </c: forEach> </select> </div> <div class = "col-sm-3"> <div class = "form-group"> <label class = "col-3 control-label no-padding-right "> fault: </label> <input id = "childTypeCont" name = "childTypeCont" value = "" type = "hidden" class = "col-sm-4 form-control" placeholder = "fault"> <select name = "faulttype1" id = "faulttype1" "> <option> -- select -- </option> <c: forEach items = "$ {childType}" var = "faulist"> <option value = "$ {faulist. faultId} ">$ {faulist. faultContent }</option> </c: forEach> </select> </div>

JS:

Function typeChange () {var type = $ ("# faulttype "). val (); var html = "<option> -- select -- </option>"; var CommitUrl = "faultType. do? Id = "+ type; $. ajax ({type: "POST", contentType: "application/json", url: CommitUrl, ype: 'json', success: function (result) {var Curedata = $. extend (true, [], result); if (Curedata. childType! = Null) {for (var I = 0; I <Curedata. childType. length; I ++) {html + = "<option value = '" + Curedata. childType [I]. faultId + "'>" + Curedata. childType [I]. faultContent + "</option>" ;}$ ("# faulttype1 "). empty (); $ (html ). appendTo ("# faulttype1 ");}}});}

The following is a reference written by someone else (original address: http://blog.csdn.net/gis__/article/details/6647464)

If your memory is poor, you can add it to your favorites:

1. drop-down box:

Var C0 = $ (". formcselect [@ name = 'country'] option [@ selected] "). text (); // get the text of the selected item in the drop-down menu (note that there is a space in the middle) var cc2 = $ ('. formcselect [@ name = "country"] '). val (); // obtain the value of the selected item from the drop-down menu var cc3 = $ ('. formc select [@ name = "country"] '). attr ("id"); // get the ID attribute value of the selected item from the drop-down menu $ ("# select "). empty (); // clear the drop-down box // $ ("# select" ).html (''); $ (" <optionvalueoptionvalue = '1'> 1111 </option> "). appendTo ("# select") // Add the option in the drop-down box

A little explanation:

1. select [@ name = 'country'] option [@ selected] indicates that the name attribute exists,

In addition, the select element with the selected attribute in the 'country' select element has the selected attribute;

It can be seen that the attribute is followed by the @ parameter.

2, single region:

$ ("Input [@ type = radio] [@ checked]"). val (); // get the value of the selected item of a single sequence (note that there is no space in the middle) $ ("input [@ type = radio] [@ value = 2]"). attr ("checked", 'checked'); // set single checked value = 2 to the selected status. (Note that there is no space in the middle)

3. Check box:

$ ("Input [@ type = checkbox] [@ checked]"). val (); // obtain the value of the first check box $ ("input [@ type = checkbox] [@ checked]"). each (function () {// Since multiple check boxes are selected, You can output alert ($ (this) cyclically ). val () ;}); $ ("# chk1 "). attr ("checked", ''); // do not tick $ (" # chk2 "). attr ("checked", true); // tick if ($ ("# chk1 "). attr ('checked') = undefined) {} // checks whether the check has been completed.

Of course, jquery's selector is powerful. There are many other methods.

<script src="jquery-1.2.1.js"type="text/javascript"></script> <script language="javascript"type="text/javascript"> $(document).ready(function(){ $("#selectTest").change(function() {    //alert("Hello");    //alert($("#selectTest").attr("name"));   //$("a").attr("href","xx.html");    //window.location.href="xx.html";   //alert($("#selectTest").val());    alert($("#selectTest option[@selected]").text());    $("#selectTest").attr("value", "2"); }); }); </script>  <ahrefahref="#">aaass</a> 

<! -- Drop-down box -->

1. <select id = "selectTest" name = "selectTest">
2. <optionvalueoptionvalue = "1"> 11 </option>
3. <optionvalueoptionvalue = "2"> 22 </option>
4. <optionvalueoptionvalue = "3"> 33 </option>
5. <optionvalueoptionvalue = "4"> 44 </option>
6. <optionvalueoptionvalue = "5"> 55 </option>
7. <optionvalueoptionvalue = "6"> 66 </option>
8. </select>

9. select jqueryradio, checkbox, select, radio, checkbox, and select to obtain the values of a set of radio selected items.

10. var item = $ ('input [@ name = items] [@ checked] '). val ();

11. Get the text of the selected select item

12. var item = $ ("select [@ name = items] option [@ selected]"). text ();

13. The second element in the select drop-down box is the selected value.

14. $ ('# select_id') [0]. selectedIndex = 1;

15. The second element of the radio Group is the currently selected value.

16. $ ('input [@ name = items] '). get (1). checked = true;

17. Get value:

18. text box, text area: $ ("# txt"). attr ("value ");

19. Multi-choice box checkbox: $ ("# checkbox_id"). attr ("value ");

20. radio Group radio: $ ("input [@ type = radio] [@ checked]"). val ();

21. select: $ ('# sel'). val ();

22. Control form elements:

23. text box, text area: $ ("# txt"). attr ("value", ''); // clear the content

24. $ ("# txt"). attr ("value", '11'); // fill in the content

25. Multi-choice box checkbox: $ ("# chk1"). attr ("checked", ''); // do not check

26. $ ("# chk2"). attr ("checked", true); // check

27. if ($ ("# chk1"). attr ('checked') = undefined) // you can check whether the checked has been checked.

28. radio Group radio: $ ("input [@ type = radio]"). attr ("checked", '2'); // set the project with value = 2 as the currently selected item

29. drop-down box select: $ ("# sel"). attr ("value", '-sel3'); // set the project with value =-sel3 as the selected item

30. $ ("<optionvalueoptionvalue = '1'> 1111 </option> <optionvalueoptionvalue = '2'> 2222 </option> "). appendTo ("# sel") // Add

Option in the drop-down list

31. $ ("# sel"). empty (); // clear the drop-down list

32. Get the value of a set of radio selected items

33. var item = $ ('input [@ name = items] [@ checked] '). val ();

34. Obtain the text of the selected select item

35. var item = $ ("select [@ name = items] option [@ selected]"). text ();

36. The second element in the select drop-down box is the selected value.

37. $ ('# select_id') [0]. selectedIndex = 1;

38. The second element of the radio Group is the currently selected value.

39. $ ('input [@ name = items] '). get (1). checked = true;

40. Get value:

41. text box, text area: $ ("# txt"). attr ("value ");

42. Multiple choice box checkbox: $ ("# checkbox_id"). attr ("value ");

43. radio Group radio: $ ("input [@ type = radio] [@ checked]"). val ();

44. select: $ ('# sel'). val ();

45. Control form elements:

46. text box, text area: $ ("# txt"). attr ("value", ''); // clear the content

47. $ ("# txt"). attr ("value", '11'); // fill in the content

48. Multi-choice box checkbox: $ ("# chk1"). attr ("checked", ''); // do not check

49. $ ("# chk2"). attr ("checked", true); // check

50. if ($ ("# chk1"). attr ('checked') = undefined) // you can check whether the checked has been checked.

51. radio Group radio: $ ("input [@ type = radio]"). attr ("checked", '2'); // set the project with value = 2 as the currently selected item

52. drop-down box select: $ ("# sel"). attr ("value", '-sel3'); // set the project with value =-sel3 as the selected item

53. $ ("<optionvalueoptionvalue = '1'> 1111 </option> <optionvalueoptionvalue = '2'> 2222 </option> "). appendTo ("# sel") // Add the option in the drop-down box

54. $ ("# sel"). empty (); // clear the drop-down list

The simple example of Ajax Implementation of level-2 interaction in Spring MVC above is all the content shared by xiaobian. I hope to give you a reference and support for the customer's house.