带有 + 的 jQuery 数据值未正确检索

Question

如果我有一个元素

data-something="+5"

然后尝试:

alert($(el).data('something')); //gives 5, not +5...

如何取回原始值？

Answer 1

引用 jquery 手册，关于使用 .data() 访问数据属性的提取 -

Every attempt is made to convert the string to a JavaScript value (this includes booleans, numbers, objects, arrays, and null) otherwise it is left as a string. To retrieve the value's attribute as a string without any attempt to convert it, use the attr() method.

看起来您的 +5 被解释为正整数 5。