Parameter passing in Get/Post in Jquery and AngularJS
This article mainly introduces the parameter passing in Jquery and Get/Post in AngularJS. It has a certain reference value. Now I share it with you. Friends in need can refer to it.
Passing parameters is not very easy. It’s a difficult thing, but sometimes it can be a bit troublesome when it involves, for example, passing an object or form to the backend. Here are some usage methods.
First of all, let’s introduce several attributes that we often confuse when sending requests:
dataType: The data format expected to be returned by the server
mimeType: Tells how to process the data format returned by the server, so that the browser will process it accordingly. For example, if the type is set to "Text/html", then the client will know that this is an HTML document. I can just present it directly; if it says "Application/pdf", then the client will know that it needs to start the PDF reader plug-in to present the content.
contentType: refers to the data type you want to send. For example, "application/json;charset=utf-8" is a very common type, and "application/x-www-form-urlencoded; charset=UTF-8" is the default type.
In addition, compare the difference between Request Payload and Form:
Request Payload needs to set Content-Type: application/json
In the chrome developer tool you You will see that it is passing an Object/json, and notice that it also contains an array. If you submit the request through ajax, the browser will only display the content you submitted through the Payload body. The browser does not know where the data comes from. Where does it come from 
Form form needs to set Content-Type: application/x-www-form-urlencoded or Content-Type: multipart/form-data, see it through the developer tool This is like this. In this case, form-data is the Request payload. The browser knows what key corresponds to what value, so it is displayed in the form of xx=xx. It should be noted that the array is converted into a string. 
Therefore, when the data you need to transfer is only key-value pairs, using Form is enough. If you need to transfer a complex structure (such as a nested array, object) , it is more appropriate to use RequestPayload.
Next let us compare various parameter passing situations~
The first situation is to pass ordinary strings
JQuery:
let params = {
a: 1,
b: 2
}
// 第一种方法:
$.ajax({
"dataType": 'json',
"type": "GET",
"url": "your_request?" + $.param(params)
})
//第二种方法:
$.ajax({
"type": "GET",
"url": "your_request",
"data": params
})AngularJS:
var conf = {
method: 'GET',
url: 'your_request',
params: {
a: 1,
b: 2
}
};
$http(conf).then(function(response){
console.log(response.data);
}, function(){
console.log("error");
}).finally(function(){
console.log("finally");
});Second case: Post form data
JQuery:
let params = {
a: 1,
b: 2,
ary1: [3,4,5]
}
$.ajax({
"type": "POST",
"url": "your_request",
"data": params
})AngularJS:
Note that data needs to be converted into URL-encoded String
ContentType needs to be set to 'application/x-www-form-urlencoded' to specify the data format to be transmitted as Form
var conf = {
method: 'POST',
url: 'your_request',
data: $.param({
c: 3,
d: 4
}),
headers: {'Content-Type': 'application/x-www-form-urlencoded'}
};The third case: Use RequestPayload for Post parameters
JQuery:
Set contentType to "application/json" and serialize params
let params = {
a: 1,
b: 2,
ary1: [3,4,5]
}
$.ajax({
"type": "POST",
"url": "your_request",
"data": JSON.stringify(params),
"contentType": "application/json"
})AngularJS:
var conf = {
method: 'POST',
url: 'your_request',
data: {
c: 3,
d: 4
}
};Sometimes, when the server returns the response is null, in XML parsing errors occur in Firefox because Firefox uses xml to parse server return values by default, and when encountering a null return value, a parsing error occurs.
It can be solved by setting mimeType in JQuery
$.ajax({
"dataType": 'json',
"type": "GET",
"url": "your_request",
"mimeType": "json"
})It is more difficult to set mimeType in AngularJS, see: https://github.com/angular/an...
Welcome to submit any errors or more solutions, thank you!
The above is the entire content of this article. I hope it will be helpful to everyone's study. For more related content, please pay attention to the PHP Chinese website!
Related recommendations:
Use angularJs ng-repeat to do table merging row effects
##ztree gets the checked node data and Merge with form information
The above is the detailed content of Parameter passing in Get/Post in Jquery and AngularJS. 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
How to implement an online speech recognition system using WebSocket and JavaScript
Dec 17, 2023 pm 02:54 PM
How to use WebSocket and JavaScript to implement an online speech recognition system Introduction: With the continuous development of technology, speech recognition technology has become an important part of the field of artificial intelligence. The online speech recognition system based on WebSocket and JavaScript has the characteristics of low latency, real-time and cross-platform, and has become a widely used solution. This article will introduce how to use WebSocket and JavaScript to implement an online speech recognition system.
WebSocket and JavaScript: key technologies for implementing real-time monitoring systems
Dec 17, 2023 pm 05:30 PM
WebSocket and JavaScript: Key technologies for realizing real-time monitoring systems Introduction: With the rapid development of Internet technology, real-time monitoring systems have been widely used in various fields. One of the key technologies to achieve real-time monitoring is the combination of WebSocket and JavaScript. This article will introduce the application of WebSocket and JavaScript in real-time monitoring systems, give code examples, and explain their implementation principles in detail. 1. WebSocket technology
How to use JavaScript and WebSocket to implement a real-time online ordering system
Dec 17, 2023 pm 12:09 PM
Introduction to how to use JavaScript and WebSocket to implement a real-time online ordering system: With the popularity of the Internet and the advancement of technology, more and more restaurants have begun to provide online ordering services. In order to implement a real-time online ordering system, we can use JavaScript and WebSocket technology. WebSocket is a full-duplex communication protocol based on the TCP protocol, which can realize real-time two-way communication between the client and the server. In the real-time online ordering system, when the user selects dishes and places an order
How to implement an online reservation system using WebSocket and JavaScript
Dec 17, 2023 am 09:39 AM
How to use WebSocket and JavaScript to implement an online reservation system. In today's digital era, more and more businesses and services need to provide online reservation functions. It is crucial to implement an efficient and real-time online reservation system. This article will introduce how to use WebSocket and JavaScript to implement an online reservation system, and provide specific code examples. 1. What is WebSocket? WebSocket is a full-duplex method on a single TCP connection.
JavaScript and WebSocket: Building an efficient real-time weather forecasting system
Dec 17, 2023 pm 05:13 PM
JavaScript and WebSocket: Building an efficient real-time weather forecast system Introduction: Today, the accuracy of weather forecasts is of great significance to daily life and decision-making. As technology develops, we can provide more accurate and reliable weather forecasts by obtaining weather data in real time. In this article, we will learn how to use JavaScript and WebSocket technology to build an efficient real-time weather forecast system. This article will demonstrate the implementation process through specific code examples. We
Simple JavaScript Tutorial: How to Get HTTP Status Code
Jan 05, 2024 pm 06:08 PM
JavaScript tutorial: How to get HTTP status code, specific code examples are required. Preface: In web development, data interaction with the server is often involved. When communicating with the server, we often need to obtain the returned HTTP status code to determine whether the operation is successful, and perform corresponding processing based on different status codes. This article will teach you how to use JavaScript to obtain HTTP status codes and provide some practical code examples. Using XMLHttpRequest
How to use insertBefore in javascript
Nov 24, 2023 am 11:56 AM
Usage: In JavaScript, the insertBefore() method is used to insert a new node in the DOM tree. This method requires two parameters: the new node to be inserted and the reference node (that is, the node where the new node will be inserted).
JavaScript and WebSocket: Building an efficient real-time image processing system
Dec 17, 2023 am 08:41 AM
JavaScript is a programming language widely used in web development, while WebSocket is a network protocol used for real-time communication. Combining the powerful functions of the two, we can create an efficient real-time image processing system. This article will introduce how to implement this system using JavaScript and WebSocket, and provide specific code examples. First, we need to clarify the requirements and goals of the real-time image processing system. Suppose we have a camera device that can collect real-time image data
