[Solved] How to substitute a variable in a template string?

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After reviewing your updated question, what I think you really want is a function that will accept a template and an object of values to replace with. Here’s a working example.

function PropertyAccess(template, values) {
  for (key in values) {
    template = template.replace('${' + key + '}', values[key])
  }
  
  return template;
}

console.log(PropertyAccess('hello ${val}', {val: 'world'}))

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solved How to substitute a variable in a template string?