Select Option Javascript doesn't trigger the website

Question

I have this thirs-part website, where if I select one country on the right

(as you can see in the video: https://i.gyazo.com/3a22aabb576f1e43040dae82204bb883.mp4 )

it changes shipping fees (in violet).

If instead, I use js ( from the chrome console for instance) to select one country using

 document.getElementById("order").value =  "IT";

it will select the country but the fees on the don't change. There is a way to let it works using javascript?

I have tried to also perform a click by

document.getElementById("order").click();

after selecting a value but it doesn't work.

You need to post more code. Please see stackoverflow.com/help/mcve — Mitya
– Mitya, Commented Sep 26, 2018 at 17:43
Please post a minimal reproducible example of your what you tried, as an edit to your question, and say specifically where you're stuck. — Luca Kiebel
– Luca Kiebel, Commented Sep 26, 2018 at 17:44
this is a third part websites i have tried with the cose i have posted but nothing . — Marià
– Marià, Commented Sep 26, 2018 at 17:47
Possible duplicate of How to change a <select> value from JavaScript — Martin Zeitler
– Martin Zeitler, Commented Sep 26, 2018 at 17:56

mplungjan · Accepted Answer · 2018-09-27 16:38:09Z

0

Trigger the onchange after changing the value - you can do that from the console or from a chrome extension

document.getElementById("order").value = "IT";
document.getElementById("order").onchange();

<select id="order" onchange="alert(this.value)">
  <option value="">Please select</option>
  <option value="IT">Italy</option>
</select>

If the site has jQuery, use $("#order").val("IT").change()

edited Sep 27, 2018 at 16:38

answered Sep 27, 2018 at 16:24

mplungjan

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8 Comments

Marià Over a year ago

the website is third-par i can't edit the html part i just want to trigger the change when i use the getlelementbyyd.value="IT";

mplungjan Over a year ago

You can do that without changing the site. document.getElementById("order").value = "IT"; document.getElementById("order").onchange(); - the select has an onchange already

mplungjan Over a year ago

If the site has jQuery, use $("#order").val("IT").change()

Marià Over a year ago

i cannot use jquery unfrtunatly i have tryed whit the occhange() but the console gives me this error : Uncaught TypeError: document.getElementById(...).onchange is not a function at <anonymous>:1:50

mplungjan Over a year ago

if document.getElementById("order").value = "IT"; works then it is very strange that it does not allow onchange

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