How to usea Custom Map Function in Javascript
This approach uses a custom map to handle specific boolean-like strings, providing a flexible way to convert a string to a boolean.
Example:
function stringToBooleanMap(str) {
const boolMap = {
'true': true,
'false': false,
'yes': true,
'no': false,
'1': true,
'0': false
};
return boolMap[str.toLowerCase()] ?? null;
}
// Example usage:
console.log(stringToBooleanMap('True')); // Output: true
console.log(stringToBooleanMap('yes')); // Output: true
console.log(stringToBooleanMap('no')); // Output: false
console.log(stringToBooleanMap('1')); // Output: true
console.log(stringToBooleanMap('0')); // Output: false
console.log(stringToBooleanMap('maybe')); // Output: null
Output
true true false true false null
JavaScript Convert a string to boolean
To Convert a string to Boolean, we have multiple approaches. We are going to learn how to Convert a string to Boolean.
Below are the approaches used to Convert a string to Boolean:
Table of Content
- Approach 1: Using JavaScript == Operator
- Approach 2: Using JavaScript === Operator
- Approach 3: Using the Boolean() function
- Approach 4: Using a regular expression
- Approach 5: Using the !! (double negation) operator
- Approach 6: Using JSON.parse()
- Approach 7: Using Ternary Operator
- Approach 8: Using Switch Case
- Approach 9: Using a Custom Map Function