Add exact lookup type for dictionarySearch

README.md

@@ -135,6 +135,7 @@ Searches the dictionary based on input. Search type changes what data it returns
 Search type paramaters:
 
 *   'only' - this parameter returns only entries with the characters specfied. This is a means to find all compounds words with the characters specified.
+*   'exact' - this parameter returns entries that exactly match the characters specfied. 
 *   null - returns all occurences of the character.
 
 ```javascript
@@ -183,6 +184,13 @@ console.log(hanzi.dictionarySearch('雪'));
 
 [....] //Truncated for display purposes
 
+console.log(hanzi.dictionarySearch('小孩', 'exact'));
+
+[ { traditional: '小孩',
+    simplified: '小孩',
+    pinyin: "xiao3 hai2",
+    definition: 'child/CL:個|个[ge4]' } ]
+
 console.log(hanzi.dictionarySearch('心的小孩真', 'only'));
 
 [ [ { traditional: '孩',

lib/dictionary.js

@@ -118,8 +118,11 @@ function definitionLookup(word, scripttype) {
   }
 }
 
+// types:
+//  only - Just the characters and no alternatives. 
+//  exact - Just the characters and no alternatives.
+//  null - finds all cases of that character 
 function dictionarySearch(character, type) {
-  /*--- Types: Only = Just the characters and no alternatives. If not then finds all cases of that character ---*/
   var search = [];
   var regexstring = '^(';
 
@@ -131,6 +134,8 @@ function dictionarySearch(character, type) {
         regexstring = regexstring + character.substring(i, i + 1) + ')+$';
       }
     }
+  } else if (type == 'exact') {
+    regexstring = `^${character}$`;
   } else {
     regexstring = '[' + character + ']';
   }

test/dictionary.js

@@ -699,6 +699,14 @@ describe('hanzidictionary', function() {
     assert.deepEqual(hanzi.dictionarySearch('爸', 'only'), expected);
   });
 
+  it('should do a dictionary search and return exact matches by passing the exact type', function() {
+    const results = hanzi.dictionarySearch('小孩', 'exact')[0]
+
+    assert.deepEqual(results.length, 1);
+    assert.deepEqual(results[0].traditional, '小孩');
+  });
+
+
   it('should now do a dictionary search with the same character and ignore the only condition', function() {
     var expected = [
       [