javascript - HTML / Javascript输入问题(HTML/Javascript Input Issue)

Question

What I'm trying to do is simple.

(我想做的很简单。)

I would like to take the input from an HTML page and use an if statement to select a certain range of numbers.

(我想从HTML页面获取输入，并使用if语句选择一定范围的数字。)

The problem that I'm having is it keeps on outputting "incorrect input".

(我遇到的问题是它不断输出“错误输入”。)

HTML

(的HTML)

javascript

(javascript)

  ask by bstrohl translate from so

Answer 1

Firstly, on the if condition, change lng and lat to theLng and theLat because they are undefined.

(首先，在if条件下，将lng和lat更改为theLng和theLat，因为它们未定义。)

Then, to get the value you have to use .value , like so :

(然后，要获取值，您必须使用.value ，如下所示：)

const theLat = document.getElementById('lat').value;