In Grails, the Goovy variables in GSP can be accessed by ${var} but that's also how JS string literals access variables, giving an error in GSP

escape_js_vars_in_string_literal.gsp

// Here Groovy prints the '$', leaving it for the JS to evaluate the variable correctly on the client side.
let btnAuthorize = `<a href="merge/${'$'}{record.id}/authorize" class="btn btn-primary">Authorize</a>`;

// This will fail if record is a JS object
let btnAuthorize = `<a href="merge/${record.id}/authorize" class="btn btn-primary">Authorize</a>`;