JavaScript | Adding minutes to Date object

Last Updated : 23 May, 2019

Given a date and the task is to add minutes to it. To add minutes to the date object in javascript, some methods are used which are listed below:

JavaScript getMinutes() Method: This method returns the Minutes (from 0 to 59) of the provided date and time.
Syntax:
```
Date.getMinutes()
```
Return value: It returns a number, from 0 to 59, representing the minutes.
JavaScript setMinutes() Method: This method set the minutes of a date object. This method can also be used to set the seconds and milliseconds.
Syntax:
```
Date.setMinutes(min, sec, millisec)
```
Parameters:
- min: It is required parameter. It specifies the integer representing the minutes. Values expected are 0-59, but other values are allowed.
- sec: It is optional parameter. It specifies the integer representing the seconds. Values expected are 0-59, but other values are allowed.
- millisec: It is optional parameter. It specifies the integer representing the milliseconds. Values expected are 0-999, but other values are allowed.
Note: All the previous three parameters accept values apart from their range and these values adjust like:
- min = -1, it means the last minute of the previous hour and same for the other parameters.
- If min value passed to 60, it means the first minute of the next hour and same for the other parameters.
Return value: It returns a number, denoting the number of milliseconds between the date object and midnight January 1 1970.
JavaScript getTime() method: This method returns the number of milliseconds between midnight of January 1, 1970, and the specified date.
Syntax:
```
Date.getTime()
```
Return value: It returns a number, representing the number of milliseconds since midnight January 1, 1970.

JavaScript setTime() method: This method set the date and time by adding/subtracting a defined number of milliseconds to/from midnight January 1, 1970.

Syntax:

Date.setTime(millisec)

Parameters: It contains single parameter millisec which is required. It specifies the number of milliseconds to be added/subtracted, midnight January 1, 1970.

Return value: It returns, representing the number of milliseconds between the date object and midnight January 1 1970.

Example 1: This example added 4 minutes to the var today by using setTime() and getTime() method.

<!DOCTYPE HTML>  
<html>  
    <head> 
        <title> 
            JavaScript | Adding Minutes to  Date object.
        </title>
    </head> 
      
    <body style = "text-align:center;" id = "body">  
          
        <h1 style = "color:green;" >  
            GeeksForGeeks  
        </h1>
          
        <p id = "GFG_UP" style = "font-size:15px; font-weight:bold;">
        </p>
          
        <button onclick = "gfg_Run()"> 
            addMinutes
        </button>
          
        <p id = "GFG_DOWN" style = 
            "color:green; font-size: 20px; font-weight: bold;">
        </p>
          
        <script>
            var el_up = document.getElementById("GFG_UP");
            var el_down = document.getElementById("GFG_DOWN");
            var today = new Date();
            el_up.innerHTML = "Date = " + today;
              
            Date.prototype.addMins = function(m) {    
               this.setTime(this.getTime() + (m*60*1000)); 
               return this;   
            }
              
            function gfg_Run() {
                var a = new Date();
                a.addMins(4);
                el_down.innerHTML = a;
            }         
        </script> 
    </body>  
</html>

Output:

Before clicking on the button:
After clicking on the button:

Example 2: This example adds 6 minutes to the var today by using setMinutes() and getMinutes() method.

<!DOCTYPE HTML> 
<html> 
    <head> 
        <title> 
            JavaScript | Adding Minutes to Date object.
        </title>
    </head> 
  
    <body style = "text-align:center;" id = "body"> 
  
        <h1 style = "color:green;" > 
            GeeksForGeeks 
        </h1>
  
        <p id = "GFG_UP" style = "font-size: 15px; font-weight: bold;">
        </p>
  
        <button onclick = "gfg_Run()"> 
            addMinutes
        </button>
  
        <p id = "GFG_DOWN" style =
            "color:green; font-size: 20px; font-weight: bold;">
        </p>
          
        <script>
            var el_up = document.getElementById("GFG_UP");
            var el_down = document.getElementById("GFG_DOWN");
            var today = new Date();
            el_up.innerHTML = "Date = " + today;
              
            Date.prototype.addMinutes= function(m) {
                this.setMinutes(this.getMinutes() + m);
                return this;
            }
              
            function gfg_Run() {
                var a = new Date();
                a.addMinutes(6);
                el_down.innerHTML = a;
            }
        </script> 
    </body> 
</html>                    