Example while(i <10) { text +="The number is "+ i; i++; } Try it Yourself » If you forget to increase the variable used in the condition, the loop will never end. This will crash your browser. The Do While Loop Thedo whileloop is a variant of the while loop. This loop ...
If the condition evaluates to false, the loop stops. Flowchart of while Loop Flowchart of JavaScript while loop Example 1: Display Numbers From 1 to 3 // initialize variable i let i = 1; // loop runs until i is less than 4 while (i < 4) { console.log(i); i += 1; } Run ...
In JavaScript the while loop is simple, it executes its statements repeatedly as long as the condition is true. The condition is checked every time at the beginning of the loop.Syntaxwhile (condition) { statements }Pictorial Presentation:Example: ...
The condition is evaluated. If the condition is true the statements are evaluated. If the statement is false we exit from the while loop. Let us take a simple example below that prints the number from 0 to 10. <!-- /* *** Example While loop *** */...
只要指定条件为 true,循环就可以一直执行代码。 while 循环 While 循环会在指定条件为真时循环执行代码块。 语法 while (条件) { 需要执行的代码 } 实例 本例中的循环将继续运行,只要变量 i 小于 5: while (i<5) { x=x + "The number is " + i + ""; i++;...
The loop runs 5 times, logging numbers 0 through 4. $ node main.js 0 1 2 3 4 Do...while with false conditionThis example shows that the code block executes once even when the condition is initially false. main.js let count = 10; do { console.log('This runs once'); count++; }...
So, here’s what our while loop looks like after getting it tofollow good programming conventions (‘best practices’): vari=0;while(i<5){alert('Hi!');i++;} Believe it or not, there is a much faster, better and easier way to do this using JavaScript! It’s by using afor loop...
Example int i = 0;do { cout << i << "\n"; i++;}while (i < 5); Try it Yourself » Do not forget to increase the variable used in the condition, otherwise the loop will never end!Exercise? What is a key difference between a do/while loop and a while loop? A do/while...
Javascript While Loop Decrement Explained While watching Paul Irish : 10 Things I Learned from the jQuery Source, his code at the 31:30 mark looks like similar to this: [cc] var times = [42, 28, 75, 50, 62] times = times[Math.floor(Math.random()*times.length)] while (–times) ...
Example 1: Display Numbers from 1 to 5 // C++ Program to print numbers from 1 to 5 #include <iostream> using namespace std; int main() { int i = 1; // while loop from 1 to 5 while (i <= 5) { cout << i << " "; ++i; } return 0; } Run Code Output 1 2 3 4 ...