Thread: JavaScript: RegExp and Boolean objective

I am started learning JavaScript. I don’t have very well knowledge of JavaScript. I want to know about the JavaScript objects: RegExp Object and Boolean Object. Can anybody explain to me in detail info about these objects with examples. Thanks in advanced.

There are three methods in the J-Script RegExp Object. They are:

• exec().
• test().
• compile().

1. If you try to find a string type in a particular value and return it then you may use the exec () method which will give a null value if the string type is not found.

2. If you try to find a string pattern from a given value than the test () method is useful. This method will give false/true values.

3. If you want to change the RegExp you may use the compile() method of Regular Expression in J-Script.

Example for compile () of RegExp:

Code:

var srh =new RegExp("w");
document.write(srh.test("Hello World"));
srh.compile("t");
document.write(srh.test("Hello World"));

Example for test () of RegExp:

Code:

var srh=new RegExp("f");
document.write(srh.test("Hi eveyone"));

JavaScript has a Regular Expressions to match the patterns in a text contained in a text box.