chore: import upstream snapshot with attribution

curriculum/challenges/english/blocks/basic-javascript/bd7123c9c448eddfaeb5bdef.md

@@ -0,0 +1,67 @@
+---
+id: bd7123c9c448eddfaeb5bdef
+title: Find the Length of a String
+challengeType: 1
+forumTopicId: 18182
+dashedName: find-the-length-of-a-string
+---
+
+# --description--
+
+You can find the length of a `String` value by writing `.length` after the string variable or string literal.
+
+```js
+console.log("Alan Peter".length);
+```
+
+The value `10` would be displayed in the console. Note that the space character between "Alan" and "Peter" is also counted.
+
+For example, if we created a variable `const firstName = "Ada"`, we could find out how long the string `Ada` is by using the `firstName.length` property.
+
+# --instructions--
+
+Use the `.length` property to set `lastNameLength` to the number of characters in `lastName`.
+
+# --hints--
+
+You should not change the variable declarations in the `// Setup` section.
+
+```js
+assert(
+  __helpers.removeJSComments(code).match(/let lastNameLength = 0;/) &&
+    __helpers.removeJSComments(code).match(/const lastName = "Lovelace";/)
+);
+```
+
+`lastNameLength` should be equal to eight.
+
+```js
+assert(typeof lastNameLength !== 'undefined' && lastNameLength === 8);
+```
+
+You should be getting the length of `lastName` by using `.length` like this: `lastName.length`.
+
+```js
+assert(__helpers.removeJSComments(code).match(/=\s*lastName\.length/g) && !__helpers.removeJSComments(code).match(/lastName\s*=\s*8/));
+```
+
+# --seed--
+
+## --seed-contents--
+
+```js
+// Setup
+let lastNameLength = 0;
+const lastName = "Lovelace";
+
+// Only change code below this line
+lastNameLength = lastName;
+```
+
+# --solutions--
+
+```js
+let lastNameLength = 0;
+const lastName = "Lovelace";
+lastNameLength = lastName.length;
+```