JavaScript | Math.SQRT1_2 property

The Math.SQRT1_2 is a property in JavaScript which is simply used to find the value of square root of 1/2, whose value is approximately 0.707106.
That is,
√ (1/2) = 0.707106

Difference between property and function in javascript.
Property in JavaScript is nothing but a value whereas method is a function this can be understood with the help of an example given below.

<script>  
  
// car is an object.  
var car = {};  
  
// car.name is a property of the given object.  
car.name = "Audi",  
  
    // car.sayModel is a function of the given object.  
    car.sayModel = function() {  
        document.write("A8 <br>");  
    }  
                  
    // printing property value.  
    document.write(car.name + '<br>');  
                  
car.sayModel();      
</script>  

Output:

Audi
A8

Here as we can see that property of the object car, is going to store the string as “Audi” and it can be accessed with car.name.
sayModel is a method i.e, a function of the object and it can be accessed with car.sayModel().
It can be noticed that sayModel is just a function which use ().
Syntax:

Math.SQRT1_2;

Parameters: Here nothing is passed as a parameter because, Math.SQRT1_2 is not a function but it is a property.

Return Values: It simply returns the value of the value of square root of 1/2, whose value is approximately 7071.

Example:

Input  : Math.SQRT1_2
Output : 0.7071067811865476

Explanation: Here simply value of square root of 1/2 is shown as output.

Let’s see JavaScript code for Math.SQRT1_2 property:

Example 1:

<script>

// Here value of SQRT1_2 is printed.

document.write(Math.SQRT1_2);

</script>
Output:
```
0.7071067811865476
```

Example 2: Value of square root of 1/2 can be printed as in the form of function as shown below.

<script> 
  // function is being called. 
  function get_Value_of_square_root() 
  { 
     return Math.SQRT1_2; 
  } 
  // function is calling for getting 
  // value of square root of 1/2 
  document.write(get_Value_of_square_root()); 
</script> 

Output:

0.7071067811865476

Errors and Exceptions: Here we consider Math.SQRT1_2 as a function but in actual it is a property that is why error as output is being shown.

Example:

<scripe> 
  // Here we consider Math.SQRT1_2 as a function 
  //but in actual it is a property that is why  
  //error as output is being shown. 
  document.write(Math.SQRT1_2(12)); 
</scripe> 

Output:

Error: Math.SQRT1_2 is not a function

Application: It’s application is to find the value of the square root of 1/2 which is done with the help of this property. In mathematics, it needed a lot.
Let’s see the JavaScript program on this application:

Example:

<script>

// Value of Math.SQRT1_2 is printed.

document.write(Math.SQRT1_2);

</script>
Output:
```
0.7071067811865476
```

Supported Browsers: The browsers supported by JavaScript Math.SQRT1_2 property are listed below:

Google Chrome
Interent Explorer
Firefox
Opera
Safari

My Personal Notes

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