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Header built-in object

2022-04-23 17:15:00 【MiMenge】

effect

in the light of Request header perhaps Response head Do something

establish

Constructor creation 

let headers = new Header();

During the creation process, you can add initialized header data to it 

let header = new Header({
    
	'Content-Type' : 'application/json',
	----------------------------------
	"Content-Type' : 'text/html',
	·········
 });

Apis

Method describe
append() towards header Object key,value data Such as header.append('Content-Type'. 'image/jpg');
delete() ! Use with caution Delete the specified header
entries Iterate header information using iterators
has() Check whether the header contains a key, Returns a Boolean value
get() Get the specified header information
set() Create header information key value
keys() Traversal header information key
values() Traversal header information value

Use

combination fetch Use 

let header = new Headers({
    
	'Content-Type': 'application/json'
});

fetch('http://xxx/xxx/xx', {
    
	method: 'post',
	header,
	body: JSON.stringify({
    uname: 'Tom', age: 123});
}).then(data => data.text())
.then(value => console.log(value)).catch(err => console.error(err));

版权声明
本文为[MiMenge]所创，转载请带上原文链接，感谢
https://yzsam.com/2022/04/202204230553027546.html

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