Making a basic poll with javascript/jquery -

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just starting learn javascript/jquery.

for recent task i've been asked create function listens clicks on 2 buttons , looks @ "data-vote" attribute see voted for.

i need set event listener on buttons 'vote' class, both of have 'data-vote' attribute, 1 'great', other 'greatest'. when 1 of buttons clicked need @ attribute determine was, , increment counter affected tally.

i know seems simple, i'm lost. here's code far :

$('.vote').on('click', function(event){    var targetelement = event.target;    $(targetelement).find('data-vote').each(function(){        if .attr(great)

any @ appreciated.

var great = 0; var greatest = 0;  $('.vote').on('click', function() {   var value = $(this).data('vote');    if(value === 'great') {     great++;   } else if(value === 'greatest') {     greatest++;   } });

the key here inside click handler, $(this) refers element clicked.

you can query attribute data-vote , value. notice we're using jquery's data method, queries html5 data-* attributes.

to increment counters, can use 2 global variables great , greatest. depending on value of data-vote of button clicked, can increment corresponding global variable using ++ operator (this called increment arithmetic operator). atomic operator mutates value in place.


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