How JavaScript returns the number of categories that a string is composed of
This article will explain in detail how JavaScript returns the number of types of string composition. The editor thinks it is very practical, so I share it for you as a reference. I hope you can get something after reading this article.
Returns the number of types of string components (letters, numbers, punctuation)
The origin of LIP abbreviation: l (letter letter) + I (uint number) + P (punctuation punctuation)
Description of parameter punctuation:
Punctuation refers to an acceptable set of punctuation
To customize the symbol set, such as "include only underscores and underscores", set the parameter to "- _".
If the value is not passed or the default is null, the internal default set of punctuation marks is English punctuation marks except spaces: ~ `! @ # $% ^ & * ()-_ + = [] {};: "', /?
Function getLIPTypes (str,punctuation=null) {
Let p_regexp = new RegExp ('['+ getPunctuation (punctuation) +']')
Return / [Amurz] / .test (str) + / [0-9] / .test (str) + p_regexp.test (str)
} the characteristic of JavaScript 1.JavaScript is mainly used to add interactive behavior to HTML pages. 2.JavaScript can be embedded directly into HTML pages, but writing as a separate js file facilitates the separation of structure and behavior. 3.JavaScript has cross-platform features and can run on multiple platforms with the support of most browsers.
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