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961 B
961 B
title
| title |
|---|
| Use a Ternary Expression for Conditional Rendering |
Use a Ternary Expression for Conditional Rendering
This challenge is to use Ternary Expression only instead of using If/Else in code,
Hint
Ternary operator has three parts, but you can combine several ternary expressions together. Here's the basic syntax:
condition ? expressionIfTrue : expressionIfFalse
Solution
Here is sample solution of using ternary expression. First you need declare state in constructor like this
constructor(props) {
super(props);
// change code below this line
this.state = {
input: '',
userAge: ''
}
// change code above this line
this.submit = this.submit.bind(this);
this.handleChange = this.handleChange.bind(this);
}
Then the ternary operator
{
/* change code here */
(this.state.userAge >= 18) ? buttonTwo : (this.state.userAge== '')? buttonOne: buttonThree
}