The toString method in JavaScript is used to obtain a string representation of a function, where the string contains the function's source code.
Syntax
Example
function.toString()
Return Value
It returns a string.
JavaScript Function toString method Example
Example 1
Let's examine an illustration demonstrating the presentation of a function as a string.
Example
<script>
function add(a,b) {
return a + b;
}
document.writeln(add.toString());
document.writeln(typeof add.toString());
</script>
Output:
Output
"function add(a,b) { return a + b; }" "string"
Example 2
An illustration is provided below demonstrating how to showcase the summation of numbers presented as strings.
Example
<script>
function add(a,b) {
return a + b;
}
document.writeln(add(10,20).toString());//30
document.writeln(typeof add(10,20).toString());//string
</script>
Output:
Output
30 string
Example 3
Let's consider an example where we demonstrate how to present the ceiling value of specified numbers as a string.
Example
<script>
function absolute(num) {
return Math.ceil(num);
}
document.writeln(absolute(15.4).toString());
document.writeln(typeof absolute(15.4).toString());</script>
Output:
Output
16 string
