当id包含逗号时，jQuery get元素不起作用 [英] Jquery get element not working when id contains comma

问题描述

当id包含逗号时，为什么jquery选择器不起作用?参见 http://jsfiddle.net/sGQas/188/

Why does the jquery selector not work when the id contains a comma? See http://jsfiddle.net/sGQas/188/

<div id="1,3">Hello There!</div>

$(document).ready(function () {
  var str = "#1,3";

  if ($(str).length) {
    alert($(str).position().left);
  } else {
    alert('The element "'+str+'" does not exist on the document!');
  }
});

推荐答案

您需要使用两个反斜杠对逗号进行转义:

You need to escape the comma with two backslashes:

var str = "#1\\,3";

jsFiddle示例

jsFiddle example

请参见 https://api.jquery.com/category/selectors/

使用任何元字符(例如！"##％&'()* +，./:;< =>?@ [\] ^ {|}〜)作为名称的文字部分，必须用两个反斜杠转义:\\

To use any of the meta-characters ( such as !"#$%&'()*+,./:;<=>?@[\]^{|}~ ) as a literal part of a name, it must be escaped with with two backslashes: \\

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