How to set from 0 value to string dash "-" format

[OmarJaber]

you dint need to write js code inside jinja!
please follow instruction bellow print format for example of using for loop in jinja
you can check this post also:

Jinja templating Variables and Codes

Check this code: {%- for row in doc.sales_team -%} {{ row.sales_person }}<br> {% set cc = frappe.get_doc("Sales Person", row.sales_person) %} EMP ID: {{cc.employee or ''}} <br> {%- endfor -%} Some more example: {% set u = frappe.get_doc("Company", doc.company) %} {{ u.country or '' }} {{u.address}}

regards