Answer to Question #26590 in AJAX | JavaScript | HTML | PHP for Anshu

Question

Answer to Question #26590 in AJAX | JavaScript | HTML | PHP for Anshu

Question #26590

I am a beginner and i want to know how to execute the below pattern in through javascript,
*
**
***
****
*****
and
*****
***
*
*
***
*****

Expert's answer

You can generate required patterns in such way:


 


-Pattern


 


            *


            **


            ***


            ****


 


            JavaScript:


 


                        document.write('Pattern
#1</br>');


                        var
count=10;//maximum number of * symbol


                        var
pattern='';


                        for
(var i=1;i<=count;i++) {


                                   document.write((pattern+='*')+'</br>');//change
pattern and write it to document


                        }


 


-Pattern


 


            *****


            ***


             *


             *


            ***


            *****             


 


            Javascript:


 


                        document.write('Pattern
#2</br>');


                        var
pattern='*****';


                        var
addIt='';


                        var
addItSymb=' ';//symbol to add


 


                        /*


                        *****


                        ***


                         *


                        */


                        while
((2*addIt.length)<pattern.length) {


                                   document.write(addIt+pattern.substring(0,pattern.length-2*addIt.length)+addIt+'</br>');


                                   addIt+=addItSymb;


                        }


                        /*


                         *


                        ***


                        *****


                        */


                        while
(addIt.length!=0) {


                                   addIt=addIt.substring(0,addIt.length-1);


                                   document.write(addIt+pattern.substring(0,pattern.length-2*addIt.length)+addIt+'</br>');


                        }


 


To view results you can use such HTML document


 


            <html>


            <head>


                        <script
type="text/javascript">


                                   <!--
INSERT JAVASCRIPT HERE -->


                        </script>


            </head>


                        <body>


                        </body>


            </html>

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