API Description

In a third-party page, user's operation to draw a red packet is triggered by calling JSAPI. If a user gets a red packet successfully, the native red packet page of Weixin is invoked. A user can only draw red packets via Shake-Nearby feature, and each user can only get one red packet at most under a campaign ID. When creating a red packet campaign, a developer who chooses to use a template page does not need to call this API.

BeaconShakehbJsBridge' is introduced

<scripttype="text/javascript"src="http://zb.weixin.qq.com/app/shakehb/BeaconShakehbJsBridge.js">
</script>

API Description

The JS API for drawing red packets is called in the same format as that for the Weixin JS API, as shown below:

Function: invoke Use: Actively call the specified API General form: BeaconShakehbJsBridge.invoke("API name", {request parameters}); API name: jumpHongbao Parameters: openid, lottery_id, noncestr, sign Callback function: none

Request Parameters

Signature Generation Rules

1. Except for the "sign" field, all parameters are sorted in an ascending lexicographical order by the parameter name ASCII code, and joined into the original signature string in a URL key-value format (Param1=value1&Param2=value2...). Any parameter with a null value is excluded from the signature.

2. In the original signature string, the field names and field values are all original values without being URL-escaped.

3. Append the key parameter (the key set with the "Create Red Packet Campaign" API) to the original signature string to get the following string: Param1=value1&Param2=value2...&key=keyvalue.

4. Perform MD5 operation on the resulting string and convert all the characters to uppercase: sign=ToUpperCase(MD5(Param1=value1&Param2=value2…&key=keyvalue))

5. For the sake of security, developers must implement the signature generation logic on server side.

Request Example

BeaconShakehbJsBridge.ready(function(){
//Redirect to the Draw Red Packet page
    BeaconShakehbJsBridge.invoke('jumpHongbao',{
    lottery\_id:'LOTTERY\_ID ',
    noncestr:'378507853820041854759013507217',
    openid:'OPENID',
    sign:'SIGN'
});
});

Error Codes: