Replace string value with javascript object

Question

I am currently making a small module for NodeJs. For which I need a small help.

I will tell it like this. I have a variable with string. It contains a string html va

Answer 1

Since you are using ES6 template string you can use a feature called 'tagged template strings'. Using tagged template strings you are allowed to modify the output of a template string. You create tagged template string by putting a 'tag' in front of the template string, the 'tag' is a reference to a method that will receive the string parts in a list as the first argument and the interpolation values as remaining arguments. The MDN page on template strings already provides an example template string 'tag' that we can use:

function template(strings, ...keys) {
  return (function(...values) {
    var dict = values[values.length - 1] || {};
    var result = [strings[0]];
    keys.forEach(function(key, i) {
      var value = Number.isInteger(key) ? values[key] : dict[key];
      result.push(value, strings[i + 1]);
    });
    return result.join('');
 });
}

You use the 'tag' by calling:

var tagged = template`


   
  



  
Test file, ${'text'}


`;

Notice that interpolation of variables uses the syntax ${'key'} instead of $(key). You can now call the produced function to get the desired result:

tagged({ "title" : "my title", "text" : "text is this" });

Run the code example on es6console