JavaScript RegExp exec() Method

by Online Tutorials Library July 22, 2022

JavaScript RegExp.prototype.exec() Method

The exec() method returns an array containing all the matched groups. It executes a search for a match in a specified string. If it finds a match, it returns an array. Otherwise, it returns null.

Syntax

Parameters

string : The string to be searched.

Return value

It will return the array if a match is found. Otherwise, it will return null.

Example 1

  var str = “Javascript is an interesting scripting language”;           var re = new RegExp( “script”, “g” );          var result = re.exec(str);          document.writeln(“Test 1 – returned value : ” +  result);  

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Output:

Test 1 - returned value : script

Example 2

  var str = “Javascript is an interesting scripting language”;   var obj = new RegExp( “output”, “g” );           var res = obj.exec(str);    document.writeln(“<br />Test 2 – returned value : ” +  res);  

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Output:

Test 2 - returned value : null

Example 3

  var string  = “Javascript is an interesting scripting language”;           var obj1 = new RegExp( “script”, “g” );                      var result1 = obj1.exec(string);          document.write(“Returned value : ” +  result1);            var obj = new RegExp( “language”, “g” );                      var res = obj.exec(string);         document.write(“<br />Returned value : ” +  res);   // use,document.write  

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Output:

Returned value : script  Returned value : language

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JavaScript RegExp exec() Method

JavaScript RegExp.prototype.exec() Method

Syntax

Parameters

Return value

Example 1

Example 2

Example 3

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