Как сделать, чтобы скрипт работал во время всей работы сайта, а не единожды?

Допустим, у нас есть калькулятор и нам надо выводить значение нажатой пользователем кнопки и, чтобы при каджом следующем нажатии это значение менялось (если пользователь нажимет другую кнопку).

html javascript html5 js

3rd Apr 2018, 5:52 PM

Evil Dog

7 Antworten

+ 3

https://code.sololearn.com/WxjhPOfOYLtt/?ref=app Вот,тут я сделал,при каждом нажатии увеличивается значение,я не знаю точно,может я тебя неправильно понял)

3rd Apr 2018, 8:23 PM

Nova I Outcast

+ 1

You'll want to use event listeners for such things. Basically, it's waiting for an event to take place, such as you pressing a button, or any other event. When that event takes place, it'll execute the code associated with it. <button onclick="runThisFunc();">Go!</button> ^In this example, it'll wait for the button to be clicked before it runs the function. You can attach event listeners in a more programmatic type of way with Javascript and/or jQuery. If you haven't learned jQuery, it's a real Godsend, so I'd recommend learning it. It makes dealing with event listeners insanely easier.

3rd Apr 2018, 6:06 PM

Fata1 Err0r

+ 1

And if we have <input type='button'>?

3rd Apr 2018, 6:15 PM

Evil Dog

+ 1

Exact same concept. "onclick" can be used on many elements. There are other ways to do it directly from your JS/jQuery scripts though, so that's always an option as well. Here is the list of supported/unsupported: Supported HTML tags: All HTML elements, EXCEPT (NOT SUPPORTED TAGS): <base>, <bdo>, <br>, <head>, <html>, <iframe>, <meta>, <param>, <script>, <style>, and <title> https://www.w3schools.com/tags/ev_onclick.asp

3rd Apr 2018, 6:24 PM

Fata1 Err0r

+ 1

Can you guess where is a mistake here: var digit = document.getElementById('digit'); digit.onclick = function saveToVar() { var btnValue = document.getElementById('digit').value; document.getElementById('result').innerHTML = btnValue; }; Or should I send full code?

3rd Apr 2018, 7:13 PM

Evil Dog

А если у нашей кнопки есть значение (value) и мы хотим записать это значение в переменную и вывести?

6th Apr 2018, 9:18 PM

Evil Dog

https://www.sololearn.com/discuss/2103806/?ref=app Помогите, кто изучает JavaScript

18th Dec 2019, 9:04 PM

Demon EVD [or BadGamer]