Can I use regex in if statement JavaScript?

Can I use regex in if statement JavaScript?

The RegEx variable can just then be combined with the test( ) method to check the string. As the result is just a returned boolean (true or false), it can be easily combined with an if/else statement or ternary operator to continue with further actions depending on whether the string is present or not.

How do you use ternary expressions?

The conditional (ternary) operator is the only JavaScript operator that takes three operands: a condition followed by a question mark ( ? ), then an expression to execute if the condition is truthy followed by a colon ( : ), and finally the expression to execute if the condition is falsy.

How do you form expressions in regex?

How to write Regular Expressions?

1. Repeaters : * , + and { } :
2. The asterisk symbol ( * ):
3. The Plus symbol ( + ):
4. The curly braces {…}:
5. Wildcard – ( . )
6. Optional character – ( ? )
7. The caret ( ^ ) symbol: Setting position for match :tells the computer that the match must start at the beginning of the string or line.

Which is the correct syntax for a ternary statement?

Using a normal if .. else statement is valid, but the render function’s return statement can only contain expressions so you would have to do those elsewhere.. The syntax for ternary is condition ? if : else. To be safe, you can always wrap the entire ternary statement inside parenthesis.

Can a ternary statement be wrapped in parenthesis?

To be safe, you can always wrap the entire ternary statement inside parenthesis. JSX elements are also wrapped in parenthesis. The fat arrow in an arrow function is always preceeded by two parenthesis (for the arguments) – but you don’t need any functions here anyway. So given all of that, there are a couple of syntax errors in your code.

Can you use IIFEs in a ternary function?

You are correct that IIFEs can be used within a render statement as well as ternary expressions. Using a normal if .. else statement is valid, but the render function’s return statement can only contain expressions so you would have to do those elsewhere.. The syntax for ternary is condition ? if : else.