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javaScript RegExp Object


var patt=new RegExp(pattern,modifiers);

or more simply:

var patt=/pattern/modifiers;
  • pattern specifies the pattern of an expression
  • modifiers specify if a search should be global, case-sensitive, etc.


Modifiers are used to perform case-insensitive and global searches:
iPerform case-insensitive matching
gPerform a global match (find all
 matches rather than stopping after the first match)
mPerform multiline matching

Example 1

Do a case-insensitive search for "w3schools" in a string:
var str="Visit W3Schools";
var patt1=/w3schools/i;
The marked text below shows where the expression gets a match:
Visit W3Schools
var pattern = new RegExp("[*?'\"&\\\\]");


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