Detailed explanation of the use of . metacharacter in regular expressions (with code)

This time I will bring you a detailed explanation of the use of the . sign metacharacter in regular expressions (with code). What are the precautions when using the . sign metacharacter in regular expressions? The following is a practical case, let’s take a look.

Regular expression. sign metacharacter:
The dot (.) metacharacter can match characters other than carriage return (\r) and line feed (\n) Any character.
Syntax structure:
Constructor functionMethod:

new RegExp(".")

Direct object method:
[JavaScript] Plain text view copy code run code

/./

Browser support:
IE browser supports this metacharacter.
Firefox supports this metacharacter.
Google Chrome supports this metacharacter.

Note:

In IE9 or above browsers or other standard browsers, the decimal point can match except carriage return (\r) and line feed (\n) Any character other than .
In browsers below IE8, the decimal point can match any character except the newline character (\n).
Example code:
Example 1:

var str="antzone<p style="text-align: left;">The above code can match all characters in the string. </p><p style="text-align: left;">Example 2:</p><pre class="brush:php;toolbar:false">var str="antzone<p>I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the php Chinese website! </p><p>Recommended reading: </p><p><a href="http://www.php.cn/js-tutorial-390767.html" target="_blank">Detailed explanation of the three modes of regularity (greedy, reluctant, possessive)</a></p><p><a href="http://www.php.cn/js-tutorial-390760.html" target="_blank">How to use it in JS Regularity replaces multiple spaces in a string with one space </a>, </p>

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