Javascript Loop & Conditions • and, or • Boolean • break, continue • for, for in • if else • switch case • while Javascript Array Functions • Array basics • Associative Array • concat • contains • every • filter • forEach • join • length •...
Example do{ text +="The number is "+ i; i++; } while(i <10); Try it Yourself » 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 discov...
JavaScript while Loop 在本教程中,您将学习如何使用 JavaScript while 语句创建一个循环,只要条件满足,循环就会执行指定的声明。 JavaScript while 循环语句介绍 while只要条件的计算结果为true,JavaScript 语句就会创建一个循环来执行指定语句。 下面说明while语句的语法: while (expression) { // 声明 } while语句在每...
Example: do-while loop Copy var i = 0; do{ alert(i); i++; } while(i > 1) Try it Output: 0 Points to Remember : JavaScript while loop & do-while loop execute the code block repeatedly till conditional expression returns true. do-while loop executes the code at least once even ...
Here is an example of Do While loop in JavaScript. var i=0; do { document.write(i+"") i++; } while (i <= 5) In the above code condition is checked at the end of the loop only. Here also we can use break statement to come out of the loop. Here is the example var ...
Example Let's look at an example that shows how to use a while loop in JavaScript. For example: var counter = 1; while (counter <= 5) { console.log(counter + ' - Inside while loop on TechOnTheNet.com'); counter++; } console.log(counter + ' - Done while loop on TechOnTheNet...
The JavaScript While loop executes code while a condition is true.For example, you could make your program display the value of a counter while the count is less than or equal to say, 10.Example While statement: var myBankBalance = 0; var msg = ""; while (myBankBalance <= 10)...
This example shows how to create a basic while loop that will execute a document.write 10 times and then exit the loop statement.JavaScript Code: <!-- var myCounter = 0; var linebreak = ""; document.write("While loop is beginning"); document.write(linebreak); while(myCounter < 10...
In JavaScript, the do while loop allows you to run code before the loop begins to run. This style of loop is practical when you only want the loop to continue if an initial block of code yields a particular result. For example, you can use a do while loop to grab paginated data from...
JavaScript While 循环JS For JS Break 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++...