Use JS to implement button control text box plus 1 minus 1 applied to hours + minutes

Source: Internet
Author: User

  Just as the title says use JS to implement button control text box plus 1 minus 1, this class is mainly used in hours + minutes, below a good example, like friends can refer to the following

Time.html code:  Code as follows: <!doctype html>  <html lang= "en" >  <head>  <meta charset= "UTF-8" >  <meta name= "generator" content= "editplus®" >  <meta name= "Author" content= "" >   <meta name= "Keywords" content= ">  <meta name=" Description "content=" ">  <title> document</title>  <script type= "Text/javascript" src= "Jquery-1.8.2.min.js" ></script>  <script type= "Text/javascript" src= "time.js" ></script>  </head>  <body>  <input type= "button" value= "Hour Plus" onclick= "add_hour ();" >  <input type= "text" value= "id=" Hour ">  <input type=" button "value=" Hour minus "onclick=" Sub_hour ( );" >  <br/>  <br/>  <input type= "button" value= "Minute Plus" onclick= "Add_minute ();" >  <input type= "text" value= "id=" minute ">  <input type=" button "value=" minutes minus "onclick=" sub_ Minute (); " >  </body>  </html>    time.js code:  code as follows: function Add_num (a,b,c) {    if (c<a) {  c+ +; }  else{  c=b; }  if (c<=9&&c>=0) {  c= "0" +c; }  return c;& nbsp }  function Sub_num (a,b,c) {  if (c>a) {  c--; }  else{  c=b; }  if (c<=9& amp;&c>=0) {  c= "0" +c; }  return c; }  function add_hour () {  var current_num=$ ("# Hour "). attr (" value ");  current_num=add_num (23,0,current_num);  $ (" #hour "). attr (" value ", current_num);  }  function Sub_hour () {  var current_num=$ ("#hour"). attr ("value");  Current_num=sub_num (0,23, Current_num);  $ ("#hour"). attr ("value", current_num); }  function Add_minute () {  var current_num =$ ("#minute"). attr ("value");  current_num=add_num (59,0,current_num);  $ ("#minute"). attr ("value", Current_num); }  function Sub_minute () {  var current_num=$("#minute"). attr ("value");  current_num=sub_num (0,59,current_num);  $ ("#minute"). attr ("value", Current_ num); } 
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