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);

Test it Now

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);

Test it Now

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

Test it Now

Output:

Returned value : script
Returned value : language

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JavaScript RegExp Object

JavaScript RegExp.prototype.exec() Method

Syntax

Parameters

Return value

Example 1

Example 2

Example 3

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