convert string to boolean js
To convert a string to a boolean in Node.js, you can use the Boolean()
function or the double negation !!
operator. Here are the steps to convert a string to a boolean:
- Step 1: Start with a string that represents a boolean value, such as
"true"
or"false"
. - Step 2: Use the
Boolean()
function to convert the string to a boolean value. This function takes an argument and returnstrue
if the argument is truthy, andfalse
if the argument is falsy. In the case of a string, theBoolean()
function will returntrue
for non-empty strings andfalse
for an empty string. - Step 3: Alternatively, you can use the double negation
!!
operator to convert the string to a boolean value. This operator converts any value to its boolean equivalent. For example,!!"true"
will returntrue
, and!!"false"
will returnfalse
. - Step 4: The resulting boolean value can be stored in a variable or used in any further logic or operations.
Here is an example that demonstrates both approaches:
const str = "true";
// Using Boolean() function
const boolValue1 = Boolean(str);
console.log(boolValue1); // Output: true
// Using !! operator
const boolValue2 = !!str;
console.log(boolValue2); // Output: true
In this example, the string "true"
is converted to a boolean value using both the Boolean()
function and the double negation !!
operator. Both approaches will result in the variable boolValue1
and boolValue2
holding the boolean value true
.