get url query in liquid
{%- capture contentForQuerystring -%}{{ content_for_header }}{%- endcapture -%} {%- assign pageUrl = contentForQuerystring | split:'"pageurl":"' | last | split:'"' | first | split:'.myshopify.com' | last | replace:'\/','/' | replace:'%20',' ' | replace:'\u0026','&' -%}
Source: stackoverflow.com