title: JsonPath expression to filter using regex
body: <p>We are using a tool which uses jayway library for evaluating JSONpath expression. <strong>Javascript does NOT seem to work with it</strong>. How can I use regular expression in the JSONPath in such a case. For instance, in the below example I would like to filter all book titles whose title has the word "Sword" in it:</p>
  
  <pre><code>{
      "store": {
          "book": [
              {
                  "category": "reference",
                  "author": "Nigel Rees",
                  "title": "Sayings of the Century",
                  "price": 8.95
              },
              {
                  "category": "fiction",
                  "author": "Evelyn Waugh",
                  "title": "Sword of Honour",
                  "price": 12.99
              },
              {
                  "category": "fiction",
                  "author": "Herman Melville",
                  "title": "Moby Dick",
                  "isbn": "0-553-21311-3",
                  "price": 8.99
              },
              {
                  "category": "fiction",
                  "author": "J. R. R. Tolkien",
                  "title": "The Lord of the Rings",
                  "isbn": "0-395-19395-8",
                  "price": 22.99
              }
          ],
          "bicycle": {
              "color": "red",
              "price": 19.95
          }
      },
      "expensive": 10
  }
  </code></pre>