Interception people think
1, axios request response blocker
// add request interceptor axios.interceptors.request.use (function (config) {
// do something before sending a request
return config;
}, function (error) {
// do something to request error
return Promise.reject (error);
}); // add response blocker axios.interceptors.response.use (function (response) {
// do something response data
return response;
}, function (error) {
// do error response something
return Promise.reject (error);
});
2, axios the configuration and transformResponse transformRequest
// `transformRequest` allowed before sending to the server, the data modification request
// only be used in a 'PUT', 'POST' and 'PATCH' request method several
functions // later in the array must return a string, or an ArrayBuffer, or Stream
transformRequest: [function (data) {
// perform any data conversion processing of
return data;
}],
// `transformResponse` in the transmission before then / catch to allow to modify the response data
transformResponse: [function (data ) {
// perform any data conversion processing of
return data;
}],
3、Object.defineProperty(object, propertyName, {})
Object.defineProperty(obj, key, {
get(){
Dep.target && dep.addDep(Dep.target);
return val;
},
set(newVal){
if(newVal === val){
return;
}
val = newVal;
dep.notify();
}
})
4, the interior of the class and get SET, intercept access attribute behavior
class MyClass {
constructor() {
// ... }
get prop() {
return 'getter';
}
set prop(value) {
console.log('setter: '+value);
}}
reference: