Javascript

Sometimes you need two or three useful libraries to get a job done. Here are a few.

Graphical Libraries

• https://c3js.org/
• https://gionkunz.github.io/chartist-js/
• https://d3js.org/
• https://www.highcharts.com/

I prefer highcharts but there is a cost for non-commercial use.

They have a pre-revenue license for start-ups. See https://shop.highsoft.com/highcharts/high-five-license?options=cart

Validation Libraries

• https://formvalidation.io
• https://github.com/jquery-validation/jquery-validation

More Validation & Methods

• https://stackoverflow.com/questions/10281962/is-there-a-minlength-validation-attribute-in-html5
• https://www.w3.org/TR/html5/sec-forms.html#the-constraint-validation-api
• https://mdbootstrap.com/docs/jquery/forms/validation/

Pure HTML5

<form action="/action_page.php">
  Country code: <input type="text" name="country_code" pattern="[A-Za-z]{3} required" title="Three letter country code">
  <input type="submit">
</form>

AJAX

• https://github.com/axios/axios

References

• https://thenextweb.com/dd/2015/06/12/20-best-javascript-chart-libraries/
• https://github.com/wbkd/awesome-d3