translating

1-js/4-data-structures/8-array-methods/1-camelcase/_js.view/solution.js

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+function camelize(str) {
+  return str
+    .split('-') // my-long-word -> ['my', 'long', 'word']
+    .map( 
+      (word, index) => index == 0 ? word : word[0].toUpperCase() + word.slice(1)
+    ) // ['my', 'long', 'word'] -> ['my', 'Long', 'Word']
+    .join(''); // ['my', 'Long', 'Word'] -> myLongWord
+}

1-js/4-data-structures/8-array-methods/1-camelcase/_js.view/test.js

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+describe("camelize", function() {
+
+  it("leaves an empty line as is", function() {
+    assert.equal(camelize(""), "");
+  });
+
+  it("turns background-color into backgroundColor", function() {
+    assert.equal(camelize("background-color"), "backgroundColor");
+  });
+
+  it("turns list-style-image into listStyleImage", function() {
+    assert.equal(camelize("list-style-image"), "listStyleImage");
+  });
+
+  it("turns -webkit-transition into WebkitTransition", function() {
+    assert.equal(camelize("-webkit-transition"), "WebkitTransition");
+  });
+
+});

1-js/4-data-structures/8-array-methods/1-camelcase/task.md

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+importance: 5
+
+---
+
+# Translate border-left-width to borderLeftWidth
+
+Write the function `camelize(str)` that changes dash-separated words like "my-short-string" into camel-cased "myShortString".
+
+That is: removes all dashes, each word after dash becomes uppercased.
+
+Examples:
+
+```js
+camelize("background-color") == 'backgroundColor';
+camelize("list-style-image") == 'listStyleImage';
+camelize("-webkit-transition") == 'WebkitTransition';
+```
+
+