How to package this code into a plug-in that can be used in every page without having to write the same class name or ID name?

$(function(){
    var isBox = false;  
    $("-sharpselect").hide();   
      
    $("-sharpinput_select").focus(function () { 
      $(this).siblings("-sharpselect").show();   
      isBox = true;  
    });  
    $("-sharpmousemove").mousemove(function () {
      isBox = true;  
    });  
    $("-sharpmousemove").mouseout(function () { 
      isBox = false;  
    });  
    $("-sharpinput_select").blur(function () { 
      if (isBox == true) return false;  
      $("-sharpselect").hide();  
    });  
    $("-sharpselect").find("li").each(function () {  
      $(this).on("click", function () {  
        isBox = false;  
        var text = $(this).text();  
        $("-sharpinput_select").val(text);  
        $("-sharpselect").hide();  
      })  
    })
})
Mar.11,2021
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b33026-4eac3.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b33026-4eac3.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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