javascript 未捕获的错误：语法错误，无法识别的表达式：input:checkbox[name=ninja_forms_field_57[terms]]
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Uncaught Error: Syntax error, unrecognized expression: input:checkbox[name=ninja_forms_field_57[terms]]
提问by damrakred
I'm trying to limit the number of checkboxes that can be checked within a form, but am getting the following error:
我正在尝试限制可以在表单中选中的复选框的数量，但出现以下错误：
Uncaught Error: Syntax error, unrecognized expression: input:checkbox[name=ninja_forms_field_57[terms]]
未捕获的错误：语法错误，无法识别的表达式：input:checkbox[name=ninja_forms_field_57[terms]]
Here is the Javascript that I'm using:
这是我正在使用的 Javascript：
// Main Category
var $checkboxes_to_limit2 = $("#taxonomy_47").find("input:checkbox[name=ninja_forms_field_47[terms]]");
$checkboxes_to_limit2.live("change", function() {
if($checkboxes_to_limit2.filter(":checked").length >= 3) {
$checkboxes_to_limit2.not(":checked").attr("disabled","disabled");
}
else {
$checkboxes_to_limit2.removeAttr("disabled");
}
});
回答by Matthew Blancarte
You need to treat the name attribute as a string, so
您需要将 name 属性视为字符串，因此
input:checkbox[name=ninja_forms_field_47[terms]]
should be
应该
input:checkbox[name='ninja_forms_field_47[terms]']
回答by damrakred
You need some additional single quotes:
您需要一些额外的单引号：
var $checkboxes_to_limit2 =
$("#taxonomy_47").find("input:checkbox[name='ninja_forms_field_47[terms]']")
