Type Conversion
Converting a string data type to integer?
How to convert a float to integer in javascript?
Explanation
Data Type Conversion:
The following data type conversions are possible
a) String to Integer (int)
b) Float to Integer (int)
c) String to Float
d) Integer (int) to String
e) Float to String
a) Converting String to Integer
To convert a value from string to integer we have to use the function or method "parseInt(). Passing a correct argument to the function (e.g: "4") will return correct value else (e.g: "sd") 0 will be returned.
b) Converting Float to Integer
To convert a float value in to integer we have to use the function or method parseInt.
<script language="javascript">
var a = "334";
var b = 3;
var c = parseInt(a)+b;
var d = a+b;
document.write("parseInt(a)+b = "+c);
document.write(" a+b = "+d);
</script>
The following data type conversions are possible
a) String to Integer (int)
b) Float to Integer (int)
c) String to Float
d) Integer (int) to String
e) Float to String
a) Converting String to Integer
To convert a value from string to integer we have to use the function or method "parseInt(). Passing a correct argument to the function (e.g: "4") will return correct value else (e.g: "sd") 0 will be returned.
| Example | Result |
| parseInt("4"); | 4 |
| parseInt("5aaa"); | 5 |
| parseInt("4.33333"); | 4 |
| parseInt("aaa"); | NaN (means "Not a Number") |
b) Converting Float to Integer
To convert a float value in to integer we have to use the function or method parseInt.
| Example | Result |
| parseInt(5.133); | 5 |
Example:
<script language="javascript">
var a = "334";
var b = 3;
var c = parseInt(a)+b;
var d = a+b;
document.write("parseInt(a)+b = "+c);
document.write(" a+b = "+d);
</script>
