Prototype using hash objects

1. Preface

The hash object is roughly the following method:

1) Clone (): Copies the existing hash object and returns the new hash object generated by the copy.

2) each (iterator): Iterates through the iterator of each Key-value object in the hash object, where iterator is a function of the shape functions (pair) {}, where pair is the Key-value object of the hash object.

3) Get (Key): Returns value based on key, basically similar to the Get () method of Java map.

4) Inspect (): Returns a string that shows the key-value pair of the hash object, similar to the ToString () method of Java map.

5) keys (): Returns an array of all key elements of the hash object.

6) VALUES (): Returns an array of all value of the hash object. 、

7) Merge (Otherhash): Merges the new hash object into the original hash object and returns the new hash object.

8) Set (key, value): Sets a pair of key-value pairs, similar to the put () method of Java map.

9) Toobject (): Converts a hash object into a JavaScript object, in fact the hash object and JavaScript are key-value pairs, so it is very convenient to convert each other.

Toquerystring (): Converts a hash object into a query string, which appears as a ' key1= value1&key2=value2 ' form.

One) unset (key): Removes the key-value pair corresponding to key, and returns the value corresponding to key after executing the method.

Update (object): Updates the current hash object with object.

2. Example

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Prototype using hash objects