Course Content
Introduction to JavaScript (staging)
Introduction to JavaScript (staging)
Boolean 3/4
The <code class="go3679463865">Boolean()</code> Function:
The Boolean() function, in JavaScript, is used to return or convert a value to its Boolean value i.e., true or false.
Almost any value is evaluated as true if it has some sort of content, for example.
let name="paul"; console.log(Boolean(name));
As you can see for the above variable, name we get the output as true because it had a string value. An empty string would have given a false output.
Task
Use the Boolean method to check wheater the value given to the variable emptyString is true or false. Show the answer on the console.
Task
Use the Boolean method to check wheater the value given to the variable emptyString is true or false. Show the answer on the console.
As you can see now for an empty string it gave the output as false.
Switch to desktop for real-world practiceContinue from where you are using one of the options belowEverything was clear?
Boolean 3/4
The <code class="go3679463865">Boolean()</code> Function:
The Boolean() function, in JavaScript, is used to return or convert a value to its Boolean value i.e., true or false.
Almost any value is evaluated as true if it has some sort of content, for example.
let name="paul"; console.log(Boolean(name));
As you can see for the above variable, name we get the output as true because it had a string value. An empty string would have given a false output.
Task
Use the Boolean method to check wheater the value given to the variable emptyString is true or false. Show the answer on the console.
Task
Use the Boolean method to check wheater the value given to the variable emptyString is true or false. Show the answer on the console.
As you can see now for an empty string it gave the output as false.
Switch to desktop for real-world practiceContinue from where you are using one of the options belowEverything was clear?
Boolean 3/4
The <code class="go3679463865">Boolean()</code> Function:
The Boolean() function, in JavaScript, is used to return or convert a value to its Boolean value i.e., true or false.
Almost any value is evaluated as true if it has some sort of content, for example.
let name="paul"; console.log(Boolean(name));
As you can see for the above variable, name we get the output as true because it had a string value. An empty string would have given a false output.
Task
Use the Boolean method to check wheater the value given to the variable emptyString is true or false. Show the answer on the console.
Task
Use the Boolean method to check wheater the value given to the variable emptyString is true or false. Show the answer on the console.
As you can see now for an empty string it gave the output as false.
Switch to desktop for real-world practiceContinue from where you are using one of the options belowEverything was clear?
The <code class="go3679463865">Boolean()</code> Function:
The Boolean() function, in JavaScript, is used to return or convert a value to its Boolean value i.e., true or false.
Almost any value is evaluated as true if it has some sort of content, for example.
let name="paul"; console.log(Boolean(name));
As you can see for the above variable, name we get the output as true because it had a string value. An empty string would have given a false output.
Task
Use the Boolean method to check wheater the value given to the variable emptyString is true or false. Show the answer on the console.
As you can see now for an empty string it gave the output as false.
Switch to desktop for real-world practiceContinue from where you are using one of the options belowSwitch to desktop for real-world practiceContinue from where you are using one of the options below