We are required to write a JavaScript function that takes in a stringified mathematical equation. The function should return the result of the equation provided to the function.
For example: If the equation is −
const str = '1+23+4+5-30';
Then the output should be 3
Example
The code for this will be −
const str = '1+23+4+5-30'; const compute = (str = '') => { let total = 0; str = str.match(/[+\−]*(\.\d+|\d+(\.\d+)?)/g) || []; while (str.length) { total += parseFloat(str.shift()); }; return total; }; console.log(compute(str));
Output
And the output in the console will be −
3