Novice JavaScript Basic Data Collation 3 Regular _ Basics

1.js Regular Expression (RegExp object)
The RegExp object has 3 methods: Test (), exec (), and compile ().
①test () method
The test () method retrieves the specified value from the string. The return value is true or false.
var patt1=new RegExp ("E");
document.write (Patt1.test ("The best things in life are Free");
②exec () method
The EXEC () method retrieves the specified value from the string. The return value is the value that was found. If no match is found, NULL is returned.
var patt1=new RegExp ("E");
document.write (Patt1.exec ("The best things in life are Free");
To be continued.