The While Loop Thewhileloop 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 th...
JavaScript while loopLast update on August 19 2022 21:51:08 (UTC/GMT +8 hours) DescriptionIn 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....
2. While循环语法: while (变量<=结束值) { 需执行的代码 } do...while...循环至少被执行一次,语法: do { 需执行的代码 } while(变量<=结束值) 3. break和continue break :可以终止循环,继续执行循环之后的代码(如果循环之后有代码的话)。 continue: 终止当前的循环,然后从下一个值继续运行。 4. Fo...
for循环和while循环:先判断条件为true时,然后再执行 do while循环:先执行循环体,然后再判断条件 使用情况不同: 当循环次数固定时,建议使用for循环 当循环次数不固定,建议使用while循环、do while循环 先判断,再执行,则使用while循环 先执行,然后再判断,则使用do while循环 当循环条件第一次为false时,则: for 循...
while 循环(while loop): while 循环是一种条件循环,它只有当特定的条件为 true 时才会继续执行。类似的 do-while 循环用于在至少执行一次循环的情况; while循环的结构如下: while (condition) { // code to be executed } 1. 2. 3. while(condition)语句定义了循环的终止条件,只有该条件为真时,循环体内的...
TheJavaScript while loopconsists of a condition and the statement block. while (condition) {...statements...} The condition is evaluated. If the condition is true the statements are evaluated. If the statement is false we exit from the while loop. ...
一种常见的延迟执行While循环的方法是使用递归和setTimeout函数。递归是一种函数调用自身的技术,而setTimeout函数可以用来在一定时间后执行指定的函数。 以下是一个示例代码,演示了如何延迟执行While循环: 代码语言:txt 复制 function delayedWhileLoop(condition, action, delay) { if (condition()) { action(); se...
while (i < 5) { console.log('In loop'); // 忘记更新 i 的值,导致无限循环 } 为了避免无限循环,务必确保在循环体内适当更新循环条件所依赖的变量。 确保正确的条件判断 正确配置循环条件是使用while循环的另一个重要方面。一个常见的错误是错误地设置了条件表达式,使得循环体内的代码不被执行或提前停止。
In this article we show how to use the do keyword to create do...while loops in JavaScript. The do...while loop executes a block of code at least once before checking the condition. The do keywordThe do keyword is used to create a do...while loop in JavaScript. This loop executes ...
JavaScript while Loop The while loop repeatedly executes a block of code as long as a specified condition is true. The syntax of the while loop is: while (condition) { // body of loop } Here, The while loop first evaluates the condition inside ( ). If the condition evaluates to true,...