本文介绍了在javascript / jQuery中将字符串转换为数字的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

一直在尝试将以下内容转换为数字:

Been trying to convert the following to number:

<button class="btn btn-large btn-info" data-votevalue="1">
    <strong>1</strong>
</button>



var votevalue = parseInt($(this).data('votevalue'));

我也试过 Number()但是在检查结果时我仍然会得到 NaN 。我做错了什么?

I've also tried Number() but I'm still getting NaN when checking the result. What am I doing wrong?

这是完整的代码:

<div class="span7" id="button-group">
    <div class="btn-group">
        <button class="btn btn-large btn-info" data-votevalue="1"><strong>1</strong></button>
        <button class="btn btn-large btn-info" data-votevalue="2"><strong>2</strong></button>
        <button class="btn btn-large btn-info" data-votevalue="3"><strong>3</strong></button>
        <button class="btn btn-large btn-info" data-votevalue="4"><strong>4</strong></button>
        <button class="btn btn-large btn-info" data-votevalue="5"><strong>5</strong></button>
        <button class="btn btn-large btn-info" data-votevalue="6"><strong>6</strong></button>
        <button class="btn btn-large btn-info" data-votevalue="7"><strong>7</strong></button>
        <button class="btn btn-large btn-info" data-votevalue="8"><strong>8</strong></button>
        <button class="btn btn-large btn-info" data-votevalue="9"><strong>9</strong></button>
        <button class="btn btn-large btn-info" data-votevalue="10"><strong>10</strong></button>
    </div>
</div>



$('#button-group button').each(function() {
    $(this).click(function() {
        $(this).addClass('active');
        var votevalue = parseInt($(this).data('votevalue'));
        var filename = $('.mainimage').data('filename');
        var votes = parseInt($('.mainimage').data('numvotes'));
        var totalscore = parseInt($('.mainimage').data('totalscore'));
        $.ajax({
            type: 'POST',
            url: 'index.php/?category=vote',
            data: {
                "votevalue": votevalue,
                "filename": filename
            },
            success: function() {
                votes++;
                alert(votes);
                var average = ((totalscore + votevalue) / votes);
                $('#vote-incremenet').html(votes);
                $('#display-average').html(average);
                $('#display-average').show();
                $('#button-group button').each(function(){
                    $(this).unbind('click');
                });
            }
        }); // end ajax
    }); // end click
}); // end each


推荐答案

听起来像您的代码中的此不是指您的 .btn 元素。尝试使用选择器显式引用它:

It sounds like this in your code is not referring to your .btn element. Try referencing it explicitly with a selector:

var votevalue = parseInt($(".btn").data('votevalue'), 10);

另外,不要忘记基数。

这篇关于在javascript / jQuery中将字符串转换为数字的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!

05-26 23:12