--- id: 587d7db3367417b2b2512b8e title: Using the Test Method challengeType: 1 forumTopicId: 301369 --- ## Description <section id='description'> Regular expressions are used in programming languages to match parts of strings. You create patterns to help you do that matching. If you want to find the word <code>"the"</code> in the string <code>"The dog chased the cat"</code>, you could use the following regular expression: <code>/the/</code>. Notice that quote marks are not required within the regular expression. JavaScript has multiple ways to use regexes. One way to test a regex is using the <code>.test()</code> method. The <code>.test()</code> method takes the regex, applies it to a string (which is placed inside the parentheses), and returns <code>true</code> or <code>false</code> if your pattern finds something or not. ```js let testStr = "freeCodeCamp"; let testRegex = /Code/; testRegex.test(testStr); // Returns true ``` </section> ## Instructions <section id='instructions'> Apply the regex <code>myRegex</code> on the string <code>myString</code> using the <code>.test()</code> method. </section> ## Tests <section id='tests'> ```yml tests: - text: You should use <code>.test()</code> to test the regex. testString: assert(code.match(/myRegex.test\(\s*myString\s*\)/)); - text: Your result should return <code>true</code>. testString: assert(result === true); ``` </section> ## Challenge Seed <section id='challengeSeed'> <div id='js-seed'> ```js let myString = "Hello, World!"; let myRegex = /Hello/; let result = myRegex; // Change this line ``` </div> </section> ## Solution <section id='solution'> ```js let myString = "Hello, World!"; let myRegex = /Hello/; let result = myRegex.test(myString); // Change this line ``` </section>