หรือสามารถใช้คำสั่งนี้ 

นำไปปรับใช้ได้เช่นกันครับ code ชุดหลังนี้มาจาก 
https://codingbeautydev.com/blog/javascript-check-if-string-contains-only-letters-and-spaces/

body { margin: 0; padding: 2rem; }
table { text-align: left; position: relative; border-collapse: collapse; }
th, td { padding: 0.25rem; }
tr.red th { background: red; color: white; }
tr.green th { background: green; color: white; }
tr.purple th { background: purple; color: white; }
th { background: white; position: sticky; top: 0; /* Don't forget this, required for the stickiness */ box-shadow: 0 2px 2px -1px rgba(0, 0, 0, 0.4); }

https://css-tricks.com/position-sticky-and-table-headers/

Add Node

autocomplete="new-password"

Example : < input  autocomplete="new-password" .....>

เรียกใช้คำสั่งง่ายๆด้วย

echo strip_tags($text);

กรณีที่ต้องการเปิดยอมรับ tags ที่ไม่ต้องการให้ลบก็เรียกใช้แบบนี้

โดยการกำหนดค่าแท็ก Open Graph protocol ก็จะมีด้วยกันดังนี้

Document List
https://ogp.me/

Debugs Tools Cache
https://poker.line.naver.jp/

ที่มา – Developers.line.biz/en/faq/tags/

Implementations
The open source community has developed a number of parsers and publishing tools. Let the Facebook group know if you've built something awesome too!

• Facebook Object Debugger - Facebook's official parser and debugger
• Google Rich Snippets Testing Tool - Open Graph protocol support in specific verticals and Search Engines.
• PHP Validator and Markup Generator - OGP 2011 input validator and markup generator in PHP5 objects
• PHP Consumer - a small library for accessing of Open Graph Protocol data in PHP
• OpenGraphNode in PHP - a simple parser for PHP
• PyOpenGraph - a library written in Python for parsing Open Graph protocol information from web sites
• OpenGraph Ruby - Ruby Gem which parses web pages and extracts Open Graph protocol markup
• OpenGraph for Java - small Java class used to represent the Open Graph protocol
• RDF::RDFa::Parser - Perl RDFa parser which understands the Open Graph protocol
• WordPress plugin - Facebook's official WordPress plugin, which adds Open Graph metadata to WordPress powered sites.
• Alternate WordPress OGP plugin - A simple lightweight WordPress plugin which adds Open Graph metadata to WordPress powered sites.

ข้อมูลที่น่าสนใจอื่นๆ

https://css-tricks.com/essential-meta-tags-social-media/

If you want any of these characters displayed in HTML, you can use the HTML entity found in the table below.
If the character does not have an HTML entity, you can use the decimal (dec) or hexadecimal (hex) reference.

https://www.w3schools.com/charsets/ref_utf_dingbats.asp

Instead of step="any", which allows for any number of decimal places, use step=".01", which allows up to two decimal places.

More details in the spec: https://www.w3.org/TR/html/sec-forms.html#the-step-attribute