You can use two external <input>
elements where the user can enter the value for mesc
field and <button>
"Search". You can send the values from the filed to the server with every refresh of the grid or by click on the "Search". See the answer for details.
You can alternatively use only one <input>
element and allow the user to enter input in the form 13 - 60
. In general you can implement any input options which you need like Sliders, Spinner and so on.
You can integrate the external input elements in the top toolbar of jqGrid if you what. See the answer for details.
In any way you can generate any SQL statement based on users input on the server side.