How to operate Angular to implement data request
This time I will show you how to operate Angular to implement data requests, and what are the precautions for operating Angular to implement data requests. The following is a practical case, let's take a look.
When using Angular to request data, you need to introduce the HttpModule module. If you use the jsonp mode, you need to introduce the JsonpModule module
import { HttpModule, JsonpModule } from '@angular/http'imports: [ HttpModule, JsonpModule ],
import { Http, Jsonp } from '@angular/http'constructor of the current component After injecting it, you can use it
constructor(private http: Http, private jsonp: Jsonp) { }// 进行注入，拿到相对应的方法
constructor(private http: Http, private jsonp: Jsonp) { }
public list: any = []
// 请求数据
getData() {
let url = 'http://www.phonegap100.com/appapi.php?a=getPortalList&catid=20&page=1'
let _this = this
this.http.get(url).subscribe((data) => {
_this.list = JSON.parse(data['_body'])['result']
console.log(_this.list)
})
}<button (click)="getData()">get 请求数据</button>
<ul>
<li *ngFor="let item of list">
{{item.title}}
</li>
</ul>JSONP request Data
Pay attention to the difference from the get request, use the following// 请求数据
jsonpData() {
let url = 'http://www.phonegap100.com/appapi.php?a=getPortalList&catid=20&page=1&callback=JSONP_CALLBACK'
let _this = this
this.jsonp.get(url).subscribe((data) => {
_this.list = data['_body']['result']
console.log(_this.list)
})
}// 渲染
<button (click)="jsonpData()">jsonp 请求数据</button>
<ul>
<li *ngFor="let item of list">
{{item.title}}
</li>
</ul>Name&callback=JSONP_CALLBACKThe request method changes to this.jsonp.get(url)
The data format obtained after the request is not uniform and needs to be adjusted by yourself
POST requestThe request method is slightly different from that of GET. First, you need to introduce the request header {Headers}
import { Http, Jsonp, Headers } from '@angular/http'and then To define the request headers, you need to instantiate Headers first
private headers = new Headers({'Content-Type': 'application/json'})Finally bring Headers when submitting data
postData() {
let url = 'http://localhost:8080/login'
let data = {
"username": "zhangsan",
"password": "123"
}
this.http.post(
url,
data,
{headers: this.headers}
).subscribe((data) => {
console.log(data)
})
}I believe you have mastered the method after reading the case in this article, and there will be more exciting things Please pay attention to other related articles on php Chinese website!
Recommended reading:
How to operate node and use promise instead of callback functionHow to use Vue better-scroll to implement the mobile terminal Alphabetical Index NavigationThe above is the detailed content of How to operate Angular to implement data request. For more information, please follow other related articles on the PHP Chinese website!
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
Use ddrescue to recover data on Linux
Mar 20, 2024 pm 01:37 PM
DDREASE is a tool for recovering data from file or block devices such as hard drives, SSDs, RAM disks, CDs, DVDs and USB storage devices. It copies data from one block device to another, leaving corrupted data blocks behind and moving only good data blocks. ddreasue is a powerful recovery tool that is fully automated as it does not require any interference during recovery operations. Additionally, thanks to the ddasue map file, it can be stopped and resumed at any time. Other key features of DDREASE are as follows: It does not overwrite recovered data but fills the gaps in case of iterative recovery. However, it can be truncated if the tool is instructed to do so explicitly. Recover data from multiple files or blocks to a single
Open source! Beyond ZoeDepth! DepthFM: Fast and accurate monocular depth estimation!
Apr 03, 2024 pm 12:04 PM
0.What does this article do? We propose DepthFM: a versatile and fast state-of-the-art generative monocular depth estimation model. In addition to traditional depth estimation tasks, DepthFM also demonstrates state-of-the-art capabilities in downstream tasks such as depth inpainting. DepthFM is efficient and can synthesize depth maps within a few inference steps. Let’s read about this work together ~ 1. Paper information title: DepthFM: FastMonocularDepthEstimationwithFlowMatching Author: MingGui, JohannesS.Fischer, UlrichPrestel, PingchuanMa, Dmytr
Google is ecstatic: JAX performance surpasses Pytorch and TensorFlow! It may become the fastest choice for GPU inference training
Apr 01, 2024 pm 07:46 PM
The performance of JAX, promoted by Google, has surpassed that of Pytorch and TensorFlow in recent benchmark tests, ranking first in 7 indicators. And the test was not done on the TPU with the best JAX performance. Although among developers, Pytorch is still more popular than Tensorflow. But in the future, perhaps more large models will be trained and run based on the JAX platform. Models Recently, the Keras team benchmarked three backends (TensorFlow, JAX, PyTorch) with the native PyTorch implementation and Keras2 with TensorFlow. First, they select a set of mainstream
Slow Cellular Data Internet Speeds on iPhone: Fixes
May 03, 2024 pm 09:01 PM
Facing lag, slow mobile data connection on iPhone? Typically, the strength of cellular internet on your phone depends on several factors such as region, cellular network type, roaming type, etc. There are some things you can do to get a faster, more reliable cellular Internet connection. Fix 1 – Force Restart iPhone Sometimes, force restarting your device just resets a lot of things, including the cellular connection. Step 1 – Just press the volume up key once and release. Next, press the Volume Down key and release it again. Step 2 – The next part of the process is to hold the button on the right side. Let the iPhone finish restarting. Enable cellular data and check network speed. Check again Fix 2 – Change data mode While 5G offers better network speeds, it works better when the signal is weaker
How to implement dual WeChat login on Huawei mobile phones?
Mar 24, 2024 am 11:27 AM
How to implement dual WeChat login on Huawei mobile phones? With the rise of social media, WeChat has become one of the indispensable communication tools in people's daily lives. However, many people may encounter a problem: logging into multiple WeChat accounts at the same time on the same mobile phone. For Huawei mobile phone users, it is not difficult to achieve dual WeChat login. This article will introduce how to achieve dual WeChat login on Huawei mobile phones. First of all, the EMUI system that comes with Huawei mobile phones provides a very convenient function - dual application opening. Through the application dual opening function, users can simultaneously
How to install Angular on Ubuntu 24.04
Mar 23, 2024 pm 12:20 PM
Angular.js is a freely accessible JavaScript platform for creating dynamic applications. It allows you to express various aspects of your application quickly and clearly by extending the syntax of HTML as a template language. Angular.js provides a range of tools to help you write, update and test your code. Additionally, it provides many features such as routing and form management. This guide will discuss how to install Angular on Ubuntu24. First, you need to install Node.js. Node.js is a JavaScript running environment based on the ChromeV8 engine that allows you to run JavaScript code on the server side. To be in Ub
Tesla robots work in factories, Musk: The degree of freedom of hands will reach 22 this year!
May 06, 2024 pm 04:13 PM
The latest video of Tesla's robot Optimus is released, and it can already work in the factory. At normal speed, it sorts batteries (Tesla's 4680 batteries) like this: The official also released what it looks like at 20x speed - on a small "workstation", picking and picking and picking: This time it is released One of the highlights of the video is that Optimus completes this work in the factory, completely autonomously, without human intervention throughout the process. And from the perspective of Optimus, it can also pick up and place the crooked battery, focusing on automatic error correction: Regarding Optimus's hand, NVIDIA scientist Jim Fan gave a high evaluation: Optimus's hand is the world's five-fingered robot. One of the most dexterous. Its hands are not only tactile
The vitality of super intelligence awakens! But with the arrival of self-updating AI, mothers no longer have to worry about data bottlenecks
Apr 29, 2024 pm 06:55 PM
I cry to death. The world is madly building big models. The data on the Internet is not enough. It is not enough at all. The training model looks like "The Hunger Games", and AI researchers around the world are worrying about how to feed these data voracious eaters. This problem is particularly prominent in multi-modal tasks. At a time when nothing could be done, a start-up team from the Department of Renmin University of China used its own new model to become the first in China to make "model-generated data feed itself" a reality. Moreover, it is a two-pronged approach on the understanding side and the generation side. Both sides can generate high-quality, multi-modal new data and provide data feedback to the model itself. What is a model? Awaker 1.0, a large multi-modal model that just appeared on the Zhongguancun Forum. Who is the team? Sophon engine. Founded by Gao Yizhao, a doctoral student at Renmin University’s Hillhouse School of Artificial Intelligence.
