How to implement the web printing function in the applet

2. In the second step, if you want to get the brand of the phone or tool you are debugging, you can use brand.

Fourth, the fourth step is to check which language is used in the tool used, and the language can be used.

5. In the fifth step, in addition to checking the mobile phone brand, you can also check the mobile phone model and use the mode attribute.

6. Sixth, if you want to view the pixel ratio of the device, you can use the pixel ratio property.

Since the launch of the "receipt printing" function of the applet, many operation developers have exploded instantly, especially for catering operators, the realization of the new function of receipt printing has brought convenience to the operation of the restaurant. Tutorial on how to use the applet printer

Tools Raw materials.

Smartphones. Computers and notebooks.

To the machine D2 one, install the printing paper and bind the equipment.

The correct method of loading paper: if the thermal printing paper is reversed, it is impossible to print things, this needs to start from the working principle of the thermal printer, there is a layer of chemicals on the front of the thermal printing paper, and the chemical reaction occurs in the thermal printing head at a certain temperature, and then the pattern and text can be printed, so it is necessary to correctly distinguish the front and back of the printing paper and the loading direction.

The power-on button flashes green, and you can quickly double-click the printer button to get a small note with *** and the device code, which contains all the identity information of the printer device.

Take out your mobile phone and put *** into the frame, and the device can be automatically bound.

If the device is successfully bound, we will see the printer's device code and other setting options on the [Configure Device] page.

2. How to connect the Mini Program to the printer.

Register a developer account, choose an individual or an enterprise can be connected, and enjoy the same functions, but when authenticating, the individual authenticates the ID card, and the enterprise authenticates the business license, fill in the registration information Email verification to complete the registration.

API documentation: API requests and responses are transmitted in JSON format and are unified in HTTP POST request mode. Request parameters: When initiating a request, you need to concatenate the following parameters after the URL.

Parameter Name, Parameter Type, and Description.

Nonce String is a random string (usually 8-10 digits).

timestamp string timestamp (down to the second).

signature string (lowercase).

Status Code Description:

Clone with https using web url with git or checkout with svn.

Overview, Release Notes, Help, Upload API Documentation, Debugging, and Printing.

In fact, it is very simple to use, just put such a tag in the page, where src must be configured in the applet management center. Note that the web-view will fill the entire page, and no matter what else is on the page, it won't be displayed.

1. First of all, open the js software to create a new fragment of a small program.

2. Then define the shared function directly in js, and pay attention to the fixed function name.

3. Then add a button to wxml, note its open-type type.

4. In addition, we can also define a ** as a background in the button.

5. At this time, you can see that the button is defined.

6. Finally, click the button to trigger the sharing function.

The specific operation steps of the Mini Program to realize the sharing function are as follows:

2. Then click on the top right of the pageOptions.

3. After that, click on the "**" option in the page.

4. Then click on the friend you want to share on the page and click the "Send" option to realize the sharing function.

If you want to share a small program, it's actually very simple.

Open the applet you want to share.

Click on the three dots in the top right.

Just click **.

The interface provided by the jssdk can be used in the embedded web page, but the pit is coming, it does not support the call of the payment interface, and after some research, it finally opens up the interaction between the two sides.

Approximate process. 1. Explain the documents involved first, which will be used below.

script>

2. First of all, we embed an embedded web page normally like the official website, the url is the variable defined in the data in wxmini, and the webview loads the web page is this url.

web-view>

4. When inline the web page web call payment, put the payment amount, payment description, and payment success jump URL....Any parameter you want, remember EncodeUriComponent), pass it to the native page of the applet.

5. Get the value of the embedded web page in the applet payment interface wxmini, which is convenient to demonstrate here, in fact, it is better to store these values that will be displayed in the interface in the data of the page.

onload: function (options) ,6、After the payment is successful, save the redirect URL with the payment result and the current time to the global variable.

7. Back to the applet wxmini, onshow will be triggered, and the interface will be loaded without refresh.

beforerouteupdate (to, from, next)

next()}

With GoEasy, you don't need to set up a WebSocket server, through the interface provided by GoEasy, you can easily and quickly send information to any of your clients.

Here's how to use it:

Get the GoEasy SDKimport goeasy from './';

Initialize the goeasy objectThe Mini Program receives the messageSend a message on the applet:

Here's the hint: port conflicts. Look in this direction for the problem. As for the specific solution, I'm sorry, I only understand the procedure.

The new version of the development tools is now web-enabled by default.

Removed the web settings button.

Hello view's mosaic web page requires enterprise qualifications Personal qualifications are not accessible, first use enterprise qualifications and then listen to access the background, open the business domain name Enter the business domain name starting with https, and then enter your ** in the applet segment webview to access! I hope my answer is useful to you.

How did you do it ?? Solving.

The page to be opened in the webview needs to set a whitelist, go to the user background, enter the development settings, and add the ** domain name to the configuration.