---
metadata:
  - name: generator
    content: Diplodoc Platform v5.50.6
alternate:
  - https://yandex.com.tr/support/metrica/en/objects/params-method.md
  - https://yandex.com.tr/support/metrica/es/objects/params-method.md
  - https://yandex.com.tr/support/metrica/pt/objects/params-method.md
  - https://yandex.com.tr/support/metrica/ru/objects/params-method.md
  - https://yandex.com.tr/support/metrica/tr/objects/params-method.md
---
> **Documentation Index:** Fetch the complete configuration index at https://yandex.com.tr/support/metrica/en/llms.txt

# params

<!-- source: en/_includes/code/counter-initialize/id-counter-initialize/rest-js.md -->
{% note warning %}

Working with the JavaScript API requires knowledge of HTML and JavaScript. If you don’t know these languages, contact your website developer or webmaster.

{% endnote %}
<!-- endsource: en/_includes/code/counter-initialize/id-counter-initialize/rest-js.md -->


Transmitting custom [session parameters](https://yandex.com.tr/support/metrica/en/data/visit-params-data.md).


{% note info %}

Some of the field names are reserved for [transmitting E-commerce data](https://yandex.com.tr/support/metrica/en/data/e-commerce.md). Do not use these names to send session parameters. Do not send your custom parameters with reserved ones.

{% endnote %}


```javascript
ym(XXXXXXXX, 'params', parameters);
```


#|
||
**Parameter**
|
**Default value**
|
**Type**
|
**Description**
||
||
`parameters`[*](*Параметр)
|
—
|
Object | Array
|
[Session parameters](https://yandex.com.tr/support/metrica/en/data/visit-params-data.md). Example of sending an object:
```javascript 
var myParams = {test: {myParam: 123}};
 ym(XXXXXXXX, 'params', {params: myParams}); 
```

Example of sending an array:
```javascript 
var myParamsArray = [{test: {myParam: 123}},
 {test: {myParam: 456}}];
 ym(XXXXXXXX, 'params', {params: myParamsArray}); 
```
||
|#

^*^ Required parameter.

<!-- source: en/_includes/buttons/chat-button.md -->
[Chat with us](https://yandex.com.tr/chat/#/user/036e6a02-3620-9cdc-4c5e-a34667a7379e?utm_source=spravka){.button}

<!-- source: en/_includes/styles/href-to-button.md -->

<!-- endsource: en/_includes/styles/href-to-button.md -->
<!-- endsource: en/_includes/buttons/chat-button.md -->

<!-- source: en/_includes/buttons/support-button.md -->
<div class="cut-button">

{% cut "Write an email" %}

<!-- source: en/_includes/popup/id-popup/wrong-sup.md -->
Please note: Our support team will never initiate a call to you. Do not follow any instructions of people who call you and introduce themselves as the Yandex Metrica support team.
<!-- endsource: en/_includes/popup/id-popup/wrong-sup.md -->

<div style="padding: 15px;
     margin: 10px 0;
     background: #FFFFFF;
     border-radius: 10px;
     border: 1px solid var(--g-color-line-generic);">
  <iframe style="background: #FFFFFF;"
        height="700"
        width="100%"
        frameborder="0"
        src="https://forms.yandex.com.tr/surveys/1706/?&iframe=1&lang=tr">
  </iframe>
</div>

{% endcut %}

</div>

<!-- source: en/_includes/styles/cut-button.md -->

<!-- endsource: en/_includes/styles/cut-button.md -->
<!-- endsource: en/_includes/buttons/support-button.md -->

<!-- source: en/_includes/footer-links.md -->
- - -

<div class="borderless-table">

#|
||
Useful links

- [Demo tag](https://metrica.yandex.com.tr/r/dashboard?)
- [Add a tag](https://metrica.yandex.com.tr/add/)
- [Free tag setup](https://yandex.com.tr/promo/freeservice/metrica?utm_source=help_metrica_tr&utm_medium=cpc&utm_campaign=1)
- [Yandex Metrica API](https://tech.yandex.com.tr/metrika/)
- [Suggest your idea](https://yandex.com.tr/support/metrica/troubleshooting/idea.html)
- [Discuss in Telegram](https://t.me/yandexmetrika)
|
Online training

- [Get a Yandex Metrica certificate](https://yandex.ru/adv/expert/exam/metrika/?utm_source=metrika_help&utm_medium=web&utm_campaign=static&utm_content=useful_links)


- [Take a training course](https://yandex.com/adv/edu/online/metrika?utm_source=metrika_help&utm_medium=web&utm_campaign=static&utm_content=useful_links)

||
|#

</div>

<!-- source: en/_includes/styles/table-style.md -->

<!-- endsource: en/_includes/styles/table-style.md -->
<!-- endsource: en/_includes/footer-links.md -->

[*Параметр]: <sup >*</sup> Required parameter.