Three common binding event methods in JS
In the study of JavaScript, we often encounter the event mechanism of JavaScript, such as event binding, event listening, event delegation (event agent), etc. What do these nouns mean and what are their functions?
Event binding
To make JavaScript respond to user actions, you first bind event handle ...
Posted by theycallmepj on Tue, 17 Mar 2020 02:55:45 -0700
Front and Back End Key Allocation Verification
Each time this page is opened, the backend generates a certificate based on Session
if(!isset($_SESSION['key_pub'])){
$rsa_model=new \Home\Library\Org\Util\Rsa();
$_SESSION['key_pub']=$rsa_model->privateKey;
$_SESSION['key_pri']=$rsa_model->privateKey;
}
$this->assign("pub_token",$_SESSION['key_pub' ...
Posted by synapp2 on Sat, 14 Mar 2020 09:33:32 -0700
Use jQuery for e-mail validation
I'm new to jQuery and want to know how to use it to verify email addresses.
#1st floor
I would recommend Verimail.js And it also has one JQuery Plugin .
Why?Verimail supports the following:
Syntax validation (according to RFC 822)
IANA TLD Validation
Spelling suggestions for the most common TLD and e-mail domains
Deny ...
Posted by sfullman on Thu, 12 Mar 2020 19:33:35 -0700
4: Front and back interaction of Vue
1: Overview
1 interface call mode
Native ajax
ajax based on jQuery
fetch
axios
2: Traditional URL
Format: Schema: / / lost: port / path? Query fragment
1):schema: protocol. For example, http,https,ftp, etc
2);host: domain name or IP address
3):port: port, http default port 80, can be omitted
...
Posted by viveleroi0 on Mon, 09 Mar 2020 21:59:10 -0700
Front end learning - carousel chart case
Article directory
Preface
Import jQuery function library
Rotation chart
requirement analysis
Realization
css
html
Development process
html framework development
Style development
Dynamic page generation
summary
Preface
Last article: Front end learning (3) - jQuery function library
The last ...
Posted by skissiks on Tue, 03 Mar 2020 20:58:21 -0800
The method of detecting data type and encapsulating a general method in JS
Test data type 1: typeof
The returned results are all strings, including the corresponding data type "number"/"string"/"boolean"/"undefined"/"symbol"/"object"/"function";
Limitation: when null is detected, the returned result is "object". When other special object ...
Posted by LostOne on Tue, 03 Mar 2020 01:04:13 -0800
Can key events be simulated by programming?
Can key events be simulated programmatically in JavaScript?
#1 building
Non jquery versions that can be used in both webkit and gecko:
var keyboardEvent = document.createEvent("KeyboardEvent");
var initMethod = typeof keyboardEvent.initKeyboardEvent !== 'undefined' ? "initKeyboardEvent" : "initKeyEvent";
keyboardEvent[initMethod](
"k ...
Posted by swamp on Mon, 02 Mar 2020 23:15:41 -0800
Dynamic filling data into HTML page through js
Under normal circumstances, it's more convenient to complete the function in JSP page. Compared with JSP page, it's more convenient to use, and there will be special circumstances. HTML page is needed to display the data, and the data needs to be acquired and displayed dynamically, so js method is us ...
Posted by nashyboy on Mon, 02 Mar 2020 21:48:54 -0800
JavaScript uses the alert() function in jQuery $("ා). Blur() to cause infinite cycles to lose focus and execute the pop-up warning solution
Problem analysis of this record: 1. Time difference problem: When I click alert, I clear and focus the input box, but the moment I click alert, the focus is not on the input box, and the defocus event is triggered, resulting in the alert pop-up. 2. Sequence question: With the mentality of first letting it pop up in the execution of clearing and ...
Posted by BDabrowski on Wed, 26 Feb 2020 20:46:34 -0800
The use of echarts report technology
1, Introduction to echarts
It is an open-source visualization library implemented by JavaScript, which can run smoothly on PC and mobile devices, and is compatible with most current browsers (IE8/9/10/11, Chrome, Firefox, Safari, etc.), the bottom layer relies on vector graphics library ZRender, providi ...
Posted by installer69 on Wed, 26 Feb 2020 19:22:28 -0800