A controlled component is typically designed to have a well-defined interface and a clear set of expected behaviors. This allows other components of the system to interact with it in a predictable and reliable way. They are often used in complex systems where there are many interacting parts, such as in distributed systems or large-scale web applications. Controlled components are often used in complex systems where there are many interacting parts, such as in distributed systems or large-scale web applications.
Waiting until the user submits the form can be more efficient and help ensure data integrity. If the user’s responses are critical and must be validated or processed in a specific order, updating the state with each change could result in inconsistent or invalid data.
To target what the user is entering in an input field when we have an event handler on that field, we can access the value of the input field using the event.target.value property within the event handler.
We use a ternary operator to write shorter and more concise conditional statements. The ternary operator is represented by the ? and : symbols with the following syntax
condition ? expression1 : expression2;The ternary operator takes three operands: a condition, an expression to evaluate if the condition is true, and an expression to evaluate if the condition is false.
if(x===y){ console.log(true); } else { console.log(false); }
console.log(x === y ? true : false);or, further simplifiedconsole.log(x === y);
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