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1 maj 2024 · The while statement creates a loop that executes a specified statement as long as the test condition evaluates to true. The condition is evaluated before executing the statement.
19 cze 2022 · The while loop has the following syntax: while (condition) { // code // so-called "loop body" } While the condition is truthy, the code from the loop body is executed. For instance, the loop below outputs i while i < 3: let i = 0; while (i < 3) { // shows 0, then 1, then 2 alert ( i ); i++; }
Syntax. do { // code block to be executed. } while (condition); Example. The example below uses a do while loop. The loop will always be executed at least once, even if the condition is false, because the code block is executed before the condition is tested: Example. do { text += "The number is " + i; i++; } while (i < 10); Try it Yourself »
1 mar 2020 · while. The while loop is the simplest looping structure that JavaScript provides us. We add a condition after the while keyword, and we provide a block that is run until the condition evaluates to true. Example: const list = ['a', 'b', 'c'] let i = 0 while (i < list.length) { console.log(list[i]) //value console.log(i) //index i = i + 1} You ...
The while Loop. With the while loop we can execute a set of statements as long as a condition is true.
15 lut 2020 · Loops are used in JavaScript to perform repeated tasks based on a condition. Conditions typically return true or false. A loop will continue running until the defined condition returns false. for Loop. Syntax. for (initialization; condition; finalExpression) { // code }
The while statement creates a loop that executes a specified statement as long as the test condition evaluates to true. The condition is evaluated before executing the statement.
