4 天前 · The test() method of RegExp instances executes a search with this regular expression for a match between a regular expression and a specified string.
Regular expressions are patterns used to match character combinations in strings. In JavaScript, regular expressions are also objects. Writing a regular expression... · Using regular expressions in... · Examples
The match() method matches a string against a regular expression. The match() method returns an array with the matches. The match() method returns null if no ...
The search() method uses an expression to search for a match, and returns the position of the match. The replace() method returns a modified string where the ... JavaScript Operator Precedence · JavaScript String Methods · Try it Yourself