如何在Javascript中通过点击按钮更新里程计值
How to update a odometer value with a button click in Javascript?
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</div>我需要下面的Javascript里程计，每次点击按钮都会增加1。这是慈善网站的一部分，每次有人捐款，里程表都会更新。
以下是脚本：
<script>
;(function($){
/*
Function: initCounter
Initializes the scrolling counter using the value currently displayed in the element.
Parameters:
$this - the counter container
e - jQuery Event object
*/
function initCounter($this, e){
$this.find('.digit').each(function(){
var $display = $(this);
var $digit = $display.find('span');
$digit.html([0,1,2,3,4,5,6,7,8,9,0].reverse().join('<br/>'))
$digit.css({
top: '-' + (parseInt($display.height()) * (10 - parseInt($digit.attr('title')))) + 'px'
});
});
animateDigit($this.find('.digit:last'), e);
}
/*
Function: animateDigit
Moves the digit indicated by $this one step. If the end of the counter has been reach, the subsequent digit(s) will also be rotated
Parameters:
$this - digit to be rotated
e - jQuery Event object
*/
function animateDigit($this, e){
var $counter = $this.closest('.counter');
var $display = $this;
var $digit = $display.find('span');
// If we've reached the end of the counter, tick the previous digit
if(parseInt($digit.css('top')) == -1 * parseInt($display.height())){
animateDigit($display.prevAll('.digit:first'), e);
}
$digit.animate({
top: '+=' + $display.height() + 'px'
}, 500, function(){
// Repeat the animation on a semi-random interval
if($display.index('.counter .digit') == $counter.find('.digit').length - 1){
setTimeout(function(){
animateDigit($display, e);
}, Math.max(550, Math.random() * 10000));
}
// If we've reached the end of the counter, loop back to the top
if(parseInt($digit.css('top')) > -1 * parseInt($display.height())){
$digit.css({
top: '-' + (parseInt($display.height()) * 10) + 'px'
});
}
});
}
// Remove comments to animate odometer
$(function(){
initCounter($('.counter'), $.Event('load'));
});
})(jQuery);
</script>
提前非常感谢你所能提供的任何帮助。同样，这是我第一次，所以请对我宽容一点。
在jquery中，将事件绑定到按钮上的点击事件可以这样做：
HTML:
<button id="mybuttonID">Click me to increment odometer!</button>
JS:
$(document).ready(function() {
// wait for the dom to initialize before binding events
$('body').on('click', '#mybuttonID', animateDigit);
});
希望这能有所帮助！
如果您没有必要将其存储在db上，我认为它可以帮助您
http://jsbin.com/quvulabaro/2/edit?html，css，js，输出
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