# Javascript Javascript is a piece of code that can be run on the browser to perform an action. Some of the cases where a Javascript action block can be used are: * Performing maths calculations. * Dynamically rendering the values of the variables. * String modification. * Firing & tracking events in Google Analytics. You can choose to run the Javascript code either on **CLIENT / SERVER**. ### Maths Calculations: Here are a few of the snippets that you can use to perform the maths calculations within the chatbot flow: | Parameter | Snippet | Description | | ------------------------- | -------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | Summation (Addition) | *const additionResult = num1 + num2;* | | | Subtraction (Minus) | *const additionResult = num1 - num2;* | | | Division (Divide) | *const additionResult = num1 / num2;* | | | Multiplication (Multiple) | *const additionResult = num1 \* num2;* | | ### Rendering values into variables: Here are few of the snippets that you can use to render values in variables. | Parameter | Snippet | Example | | --------------------------- | ----------------------------------------------------------------- | ----------------------------------------------- | | Set Variable (Conversation) | *wn.setConversationVariable(“variable\_name”,”variable\_value”);* | *wn.setConversationVariable(“name\_wn”,”ABC”);* | | Set Variable (Contact) | *wn.setContactVariable(“variable\_name”,”variable\_value”);* | *wn.setContactVariable(“name\_wn”,”ABC”);* | ### String Modification: Here are few of the snippets that you can use to calculate the length of the variable or get part of the variable. | Parameter | Snippet | Example | | -------------------- | --------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | Length of String | *const lengthOfString = “variable\_name”.length();* |

const lengthOfString = “some\_string\_content”.length();

//Output: 19

Calculates the number of characters passed/present in the value

| | Get part of a string | *const partOfString = “variable\_name”.slice();* |

const partOfString = “some\_string\_content”.slice(5);

Note: We need to pass the starting index from where we need to get the sub-string. The index starts from 0. //Output: string\_content Commonly used to pass the phone number without country code

| ### Firing & Tracking events in Google Analytics or any Analytics tool: Here is the snippet that you can use to push or record events into Google Analytics or any other analytics tool | Tool | Snippet | Example | | | | | | ------------------ | -------------------------------------------- | ------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | ---------------------------------------- | - | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | Google Analytics 4 |

window\.dataLayer = window\.dataLayer | | \[];

function gtag() {

window\.dataLayer.push(arguments);

}

gtag("js", new Date());

gtag("config", "YOUR-MEASUREMENT-ID");

gtag("event", "YOUR-EVENT-NAME", {

"send\_to": "YOUR-MEASUREMENT-ID"

// Additional parameters that you may want to pass

});

|

window\.dataLayer = window\.dataLayer | | \[];

function gtag() {

window\.dataLayer.push(arguments);

}

gtag("js", new Date());

gtag("config", "123");

gtag("event", "Swiftsell\_Test", {

"send\_to": "123",

"name": "Test",

"phone": "123456789",

});

| ### Triggering day-based flow: Here is the snippet that you can use to trigger the flow based on a specific day | Parameter | Snippet | Description | | -------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | ----------------------------------------------- | | Get current date | *const currentDate = new Date();* | Helps to get the today’s date | | Check if Fromdate should be more than Todate |

isFromDateBeforeToDate(fromDate, toDate) {

const fromDateObj = new Date(fromDate);

const toDateObj = new Date(toDate);

return fromDateObj < toDateObj;

}

| Helps to trigger the flow the day specific flow | --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.swiftsell.biz/bot-builder/action-block/javascript.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.