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Simple explanation of the Web page special effects commonly used regular expressions, this is mainly about the number of JS, telephone, mobile phone, user name, such as commonly used regular expression implementation, there is a need for friends can refer to. var parse_number =/^-?d+ (?:. d*)? (?: e[+-]?d+)? $/i; This is a regular expression that resolves numbers, where the subexpression has (
Css A few CSS elements of the simple explanation div ul DL DT Oldiv, this is very common, block-level elements, div as little as possible, and table, nesting less the better OL have sequence table. The performance is: 1. ...2. ...3. ... UL unordered list, showing that the front of the Li is a circle dot instead of 123 Many people easily ignore the use of DL DT DD DL Content BlockThe caption of the
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