For loop example: 1 2 3 4 5 6 var sum = 0; for (var i=1; i<=100; i++) { sum += i; } alert(sum); //5050 You may use break to jump out of the loop:1 2 3 4 5 6 7 var sum = 0; for (var i=1; i<=100; i++) { if (i == 50) break; stop the loop...
which means that it takes the command right after the loop, without executing the rest of it, but instead doing whatever code is next. Here’s an example of how you can use it:
which means that it takes the command right after the loop, without executing the rest of it, but instead doing whatever code is next. Here’s an example of how you can use it:
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JavaScript For Loop ExampleThis example will show you how to create a simple for loop that prints out the value of our counter until the counter reaches 5. Pay special close attention to the three different items that are on the first line of the for loop code. These are the important ...
Let's look at an example that shows how to use a for loop in JavaScript. For example: for (var counter = 1; counter < 5; counter++) { console.log(counter + ' - Inside for loop on TechOnTheNet.com'); } console.log(counter + ' - Done for loop on TechOnTheNet.com'); In ...
You can initiate many values in statement 1 (separated by comma):Example for (i = 0, len = cars.length, text = ""; i < len; i++) { text += cars[i] + ""; } Try it Yourself » And you can omit statement 1 (like when your values are set before the loop starts):Exampl...
In JavaScript, the for loop is used for iterating over a block of code a certain number of times, or to iterate over the elements of an array. Here's a quick example of the for loop. You can read the rest of the tutorial for more details. Example for (let i = 0; i < 3; i...
For loop example over an iterable object In the following example, we’re looping over the variable obj and logging each property and value: const obj = { "a": "JavaScript", 1: "PHP", "b": "Python", 2: "Java" }; for (let key in obj) { console.log(key + ": " + obj[key...
for...in loop and prototypesObjects in JavaScript can have properties inherited from object prototypes.For example, objects created using Array and Object constructors inherit many properties from Object.prototype and String.prototype. The for...in statement iterates over own properties of the object...