# Expressing numbers in expanded form - JavaScript

JavascriptWeb DevelopmentFront End TechnologyObject Oriented Programming

Suppose we are given a number 124 and are required to write a function that takes this number as input and returns its expanded form as a string.

The expanded form of 124 is −

'100+20+4'

## Example

Following is the code −

const num = 125;
const expandedForm = num => {
const numStr = String(num);
let res = '';
for(let i = 0; i < numStr.length; i++){
const placeValue = +(numStr[i]) * Math.pow(10, (numStr.length - 1 - i));
if(numStr.length - i > 1){
res += \${placeValue}+
}else{
res += placeValue;
};
};
return res;
};
console.log(expandedForm(num));

## Output

Following is the output in the console −

100+20+5
Published on 16-Sep-2020 10:32:51