Creating and handling Prompt Function in Cordova. 13/08/21
    -step 1 to create project 
        cordova create Hello io.cordova.hello Hello
    -step 2 add platform to project
        cordova platform add android
    -step 3 edit in project www->index.html,index.js file as per the aim of project
        screen shot/code of index.html
        screen shot/code of index.js
    -step 4 debug and build the project
        cordova build android
    -step 5 emulate in system emulater
        cordova emulate android
    sreen shots with all possible output