Ajax can submit data via FormData object simulation formThe first way: Customizing Formdata information//Create a Formdata objectvarFormData =NewFormData (); //to add a key-value pairFormdata.append ("team_id", This. team_id) Formdata.append
In actual work, developers often accidentally delete an important table. At this time, they will find the Administrator to retrieve the deleted table. The specific scenarios are as follows:1. Developers:SQL> conn usr1/usr1Connected.SQL> create table t (id int, name varchar2 (10 ));Table created.SQL> insert into t values (0, yejun0 );1 row created.SQL> insert into t values (1, yejun1 );1 row created.SQL> commit;Commit complete.SQL>.........................After a while.........................2.
Denver.. IDEO is an American design leader, Chairman David Kelly (David M.Kelly) for us to talk about the design axis of "Understanding human nature". How does IDEO extend this design philosophy to the Denver Institute of Design (D-School) to share his views on the impact of cross-domain training, group division of labor, building innovative thinking processes on design education. David Kelly, founder and
Installing Axios with CNPM
CNPM Install Axios-s
When installing other plug-ins, you can introduce and vue.use () directly in Main.js, but Axios is not used and can only be introduced to each component that needs to send the request immediately.
In order to solve this problem, there are two kinds of development ideas, one is to modify the prototype chain after th
the Log_archive_dest_n parameter in primary, set physical standby forward redo to cascaded destination.Define transfer mode: LGWR async or LGWR SYNCSet the Valid_for property to enable redo forwarding3. Forwarding Redo physical standby turn on archive mode4. Configure the physical standby log_archive_dest_n parameter of the forwarding redoParameter configuration case:Boston Database (Primary Role):Db_unique_name=bostonstandby_archive_dest=/arch1/boston/Remote_login_passwordfile=exclusiveLog_arc
installation.
Next, install Axios:
$ NPM Install Axios--save
Configure Axios
We need to use Axios in many components. Let's configure it in global entirety so that when we need it, we don't have to introduce it every time.
Open ./src/main.js the file, and add the following:
[...] Import store from './store ' import
Vue originally had an officially recommended Ajax plugin Vue-resource, but since Vue was updated to 2.0, the official no longer updated Vue-resourceCurrently the main Vue project chooses Axios to complete the AJAX request, and the large project uses VUEX to manage the data, so this blog will combine both to send the requestVuex installation will not be mentioned, you can refer to the previous Vue.js combat Vuex Introductory TutorialInstalling
With the Resetlogs option, the current log sequence number (log sequence numbers) is reset to 1 and all log information is discarded. The Resetlogs option is required when the following conditions are used:In the incomplete recovery (media recovery);Use a backup control file.After you open a database with Resetlogs, be sure to make a full database backup.Do you have to do it only once for incomplete recovery?With the default settings of Rman, backup database is backed up, some operations are don
reassigned.
Write plug-ins
If you use a library in many projects or want global availability, you can build your own Vue plug-in.
Plug-in libraries are simple and simple, allowing you to easily introduce the desired libraries as follows:
import MyLibraryPlugin from 'my-library-plugin';Vue.use(MyLibraryPlugin);
Just like Vue Route, Vuex, and other plug-ins, our library only needs two lines and can be used anywhere.
How to Write plug-ins
First, create a file. In this example, I will introduce an
Describes how to use Vue2 for server rendering and vue2 for server
After a month, the vue2 server rendering (SSR) was successfully deployed in the home of the new car, and Vuex was used to manage the status, the loading time of the first screen has increased from 1000 ms in the previous 4G network to-ms. There are many advantages of SSR. Now let me explain it to you.
Technology Stack
Server: Nodejs (v6.3)
Front-end framework Vue2.1.10
Front-end build tool: webpack2.2 gulp
Code check: eslint
Sou
first, the basic knowledge of this section1. Progressive reading of files for in open ('E:\Demo\python\json.txt'): Print Line2. Parsing JSON stringsThere are built-in modules in Python that make it very easy to convert a JSON string into a Python object. For example, the Json.relaods () method in the JSON module resolves the JSON string to the appropriate dictionary.Import jsons='{"A": "Googlemaps\/rochesterny", "C": "US", "NK": 0, "TZ": "America\/denver
+vuerouter2+webpack+axios construction project 2017-plate (i) Basic knowledge Overview Vue2+vuerouter2+webpack+axios construction project actual combat 2017 Plate (ii) installation Nodejs Environment and VUE-CLI Construction of initial project Vue2+vuerouter2+webpack+axios construction project combat 2017-plate (iii) Recognition of all project documents Vue2+vuer
performed on physical standby databases.
(2) Data Guard broker does not support cascaded destinations.
Configure Cascaded Destination
(1) Select a physical standby database as the cascading standby database.
(2) set the FAL_SERVER parameter in cascading standby database to primary database or other standby databases that directly receive redo data from primary database.
(3) set the LOG_ARCHIVE_DEST_n parameter in cascading standby database to specify cascaded destination and other valid paramet
groups orBusiness Units within the same company) merge into one location? YouCocould split the default partition and add the new location name. HowWocould you move records from the old partitioned into the new one? ShortOf deleting from one partition and inserting same into a new one,Wouldn't it be easier to be able to perform a single update?
Let's create a quick partitioned table example and see how moving a row works.
SQL> Create Table city_offices2 (3 office_number number not null,4 city_id
Configuration Log_archive_dest_n service points to STANDBY library to cascade the transport log, valid_for parameter write (standby_logfiles,standby_role),Sync or Async parameters will be ignored.4. In the cascaded standby library, Fal_server points to cascading standby or other standby that get logs directly from the main library. Of course, cascaded Standby library Fal_server can also point to the main library, then it will be treated as cascading standby.5. The following configuration instan
).Of course, the more intuitive way to do this is to use ES2017 to bring the async/await way, you can write asynchronous code in the form of synchronous code, of course, there are some pits inside. For front-end engineers, the biggest pit is some browsers do not support, need to translate, so if the front-end code is not built process, generally still use ES5 syntax compatibility better (JQuery Promise is support ES5, but the standard Promise to ES6 later can use )。For JavaScript asynchronous pr
The Vuejs was updated from 1.0 to version 2.0. HTTP request official also from the recommended use vue-resoure changed to Axios. Next, we'll simply use Axios to make an asynchronous request. (Read the author's default reader with the ability to use NPM commands, as well as the ability to have ES6, and so on ...). )First, we install the VUE-CLI development template (this template can be quickly generated Vue
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