jQuery 类型错误：$(...).parents(...).size 不是函数
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TypeError: $(...).parents(...).size is not a function
提问by Qrzysio
I have a basic script which allows me to click on the website's background, excluding #content.
我有一个基本的脚本，它允许我点击网站的背景，不包括#content.
After upgrading jQuery to 3.1.0 version, I get this error:
TypeError: $(...).parents(...).size is not a function.
将 jQuery 升级到 3.1.0 版本后，出现此错误：
TypeError: $(...).parents(...).size is not a function.
<script type="text/javascript">
$(function() {
$("#background").click(function(e) {
if (e.target.id == "wrapper" || $(e.target).parents("#wrapper").size())
{
// do nothing
}
else
{
window.open('http://example.com');
}
});
})
</script>`
I don't know how to fix it. jQuery is loaded properly. Please help.
我不知道如何修复它。jQuery 已正确加载。请帮忙。
回答by charlietfl
size()was deprecated years ago and removed in version 3 ... use lengthinstead
size()多年前已弃用并在版本 3 中删除...length改为使用
if (e.target.id == "wrapper" || $(e.target).parents("#wrapper").length)
All you had to do was look this up in the size() docsto find this out
您所要做的就是在size() docs中查找此内容以找到答案
回答by Shubh
Please use 'length'like @charlietflsuggested. But I was unable to trace from where the error was getting displayed, hence I ended up with below.
请像@charlietfl建议的那样使用“长度”。但是我无法从显示错误的位置进行追踪，因此我最终得到了下面的结果。
(function ($) {
$.fn.extend({
size: function () {
return $(this).length;
}
});
})(jQuery);
