noon yet"); } documentwrite("The tutorial by referencedesigner.com"); //--> </> </body> </html Exercises 1. Given numbers x,y z find and print the greatest of the threenumbersby making use of the if then else statements. Try exampleby makingchangeshere Then compareyou solution with the solution here . Copyright © 2009 Ref...
以下片段中的代码是块作用域规则的示例: // Top level scope function scopeExample() { // Scope block 1 for ( let i = 0; i < 10; i++ ){ /* Scope block 2 */ } if ( true ) { /* Scope block 3 */ } else { /* Scope block 4 */ } // Braces without keywords create scope ...
Conditions, like "if" and "else," let you control how a program runs. Learn how to use them. Use loops (like for and while) to do things over and over again. Learn how to use Document Object Model (DOM) to change HTML elements. Make interactive user experiences by handling events li...
Don’t worry if this makes no sense to you yet, in time it will. Exercise: Saying Hello to JavaScript This is the first exercise. Exercises are scattered throughout this book, you’ll recognise them because they come in a little box. In this exercise, we’ll be saying hello to JavaScr...
function fibonacci( i ) { if ( i <= 0 ) { return 0; } else if ( i === 1 ) { return 1; } else { return fibonacci( i - 1 ) + fibonacci( i - 2 ); } } function test( value, expected ) { if ( value !== expected ) { throw new Error( 'Value did not match ...
block of code to be executed if the condition is true } else { block of code to be executed if the condition is false }Example If the hour is less than 18, create a "Good day" greeting, otherwise "Good evening": if (hour < 18) { greeting = "Good day"; } else { greeting =...
How the JavaScript if statement works The if statement is the foundation for the if else statement as well as the “if, else if” statement. The “if” statement allows the programmer to execute a set of instructions if a condition is true. If the condition is false, then the code will...
<!DOCTYPE html> JavaScript if else statement : Example-1 JavaScript : if else statement Here the if else statement check whether the input marks is greater than 50 or not. Input the marks CopyJS Codefunction
More to Come ! Live Demo *To run the code mouse over on Result panel and click on 'RERUN' button.* Do not submit any solution of the above exercises at here, if you want to contribute go to the appropriate exercise page.
be able to force conditional execution of a group of statements (make decisions and branch the flow) using if-else and switch commands; be able to force a group of statements to repeat in a loop using the for, while, and do-while commands, using both dependent and independent conditions ...