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1 maj 2024 · The do...while statement creates a loop that executes a specified statement as long as the test condition evaluates to true. The condition is evaluated after executing the statement, resulting in the specified statement executing at least once.
The do...while statements combo defines a code block to be executed once, and repeated as long as a condition is true. The do...while is used when you want to run a code block at least one time.
JavaScript functions are usually given a name, but since JavaScript functions are just objects in their own right, they can be stored in variables and object properties (see later unit). Functions are different from other objects in that they can be invoked (executed) with the use of a special operator ().
The While Loop. The while loop loops through a block of code as long as a specified condition is true. Syntax. while (condition) { // code block to be executed. } Example. In the following example, the code in the loop will run, over and over again, as long as a variable (i) is less than 10: Example.
Within a method, we can alter the flow of control using either conditionals or loops. The loop statements while, do-while, and for. allow us execute a statement(s) over and over. Like a conditional, a loop is controlled by a boolean expression that determines how many times the statement is executed. E.g.,
// what to do during the loop } for The most common way to create a loop in Javascript while Sets up conditions under which a loop executes do while Similar to the while loop, however, it executes at least once and performs a check at the end to see if the condition is met to execute again break
Basic Form. do { statements } while (expression); // executed as long as expression is true. Notice the semicolon after the expression parenthesis. Combinations of statements. Keep in mind that you can have any combination of conditionals and iteration (while) statements. For example: Conditionals insides of loops. Conditionals inside conditionals.
