As long as we enter positive numbers, the while loop adds them up and prompts us to enter more numbers. So when we enter a negative number, the loop terminates. Finally, we display the total sum of positive numbers. Note: When we add two or more numeric strings, JavaScript treats them...
do/while 循环 do/while 循环是 while 循环的变体。该循环会执行一次代码块,在检查条件是否为真之前,然后如果条件为真的话,就会重复这个循环。 语法 do { 需要执行的代码 } while (条件); 实例 下面的例子使用 do/while 循环。该循环至少会执行一次,即使条件是 false,隐藏代码块会在条件被测试前执行: do { ...
Do not forget to increase the variable used in the condition, otherwise the loop will never end! Comparing For and While If you have read the previous chapter, about the for loop, you will discover that a while loop is much the same as a for loop, with statement 1 and statement 3 omi...
do...while loop In the previous tutorial, we learned about for loop. In this tutorial, we will learn about while and do..while loop. while loop The syntax of the while loop is: while (testExpression) { // the body of the loop } How while loop works? The while loop evaluates the...
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In JavaScript do while loop executes a statement block once and then repeats the execution until a specified condition evaluates to false. Syntax do { statement block } while (condition); In while loop, the given condition is tested at the beginning, i.e. before executing any of the statemen...
问使用连接的Javascript中的while循环EN一个for循环会一直重复执行，直到指定的循环条件为fasle。 JavaScrip...
for、for-in的确是使用管比较频繁的，但是额外还有两种循环语句，一种是while语句，一种是do-while语句...
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 Loop Statements StatementDescription breakBreaks out of a loop continueSkips a value in a loop whileLoops a code block while a condition is true do...whileLoops a code block once, and then while a condition is true forLoops a code block while a condition is true ...