1# Usage of Third- and Fourth-Party Libraries 2 3## How do I obtain available third-party libraries? 4 5Applicable to: OpenHarmony 3.1 Beta5 (API version 9) 6 7The three-party and four-party libraries that can be obtained through ohpm are summarized in the [OpenHarmony-TPC/tpc_resource repository](https://gitee.com/openharmony-tpc/tpc_resource). You can access this repository, and find the desired component based on the directory index. 8 9## Which third-party libraries are related to network requests? 10 11Applicable to: OpenHarmony 3.1 Beta5 (API version 9) 12 13The following third-party libraries are related to network requests: [Axios](https://gitee.com/openharmony-sig/axios), httpclient, and okdownload. For details, see the [OpenHarmony-TPC/tpc_resource repository](https://gitee.com/openharmony-tpc/tpc_resource). 14 15## How do I use ohpm to import third- and fourth-party libraries? 16 17Applicable to: OpenHarmony 3.1 Beta5 (API version 9) 18 19**Solution** 20 21- Method 1: 22 1. Open the **Terminal** window and run the following command to go to the **entry** directory: 23 24 ``` 25 cd entry 26 ``` 27 28 2. Run the following command to install a third-party library, for example, **dayjs**: 29 30 ``` 31 ohpm install dayjs 32 ``` 33 34 3. Add the following statement in the .js file to import the third-party library: 35 36 ``` 37 import dayjs from 'dayjs'; 38 ``` 39 40 41- Method 2: 42 1. Enter the **entry** directory of the project and open the **oh-package.json5** file. 43 2. Write the third-party library to be installed (for example, **dayjs**) in the **oh-package.json5** file. 44 45 ``` 46 { 47 "dependencies": { 48 "dayjs": "^1.10.4", 49 } 50 } 51 ``` 52 53 3. Open the **Terminal** window and run the following command to go to the **entry** directory: 54 55 ``` 56 cd entry 57 ``` 58 59 4. Run the following command to install the third-party library: 60 61 ``` 62 ohpm install 63 ``` 64 65 5. Add the following statement in the .js file to import the third-party library: 66 67 ``` 68 import dayjs from 'dayjs'; 69 ``` 70