Greedy mode and lazy mode in regular expressions

rule:

• Greedy pattern is to match as much as possible
• Lazy mode is as few matches as possible

 

Such as the string <div> a123 </ div> <div> b321 </ div>

• Using the regular expression <div>. * </ Div> matches the entire string <div> a123 </ div> <div> b321 </ div>
• If you want to match only the content of the first div tag <div> a123 </ div>, use the regular expression <div>. *? </ Div>

 

to sum up:

• Regular expression, which means that the string repeats a few characters? + * {} Defaults to greedy mode
• To switch to lazy mode, add one after the metacharacter? 

 

 

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