Javascript jQuery contains() 具有可变语法
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jQuery contains() with a variable syntax
提问by Mircea
I have an "uncaught exception: Syntax error, unrecognized expression: )" in a jQuery application.
我在 jQuery 应用程序中有一个“未捕获的异常：语法错误，无法识别的表达式：)”。
The code is:
代码是：
<script>
$(document).ready(function(){
$('.drag').click(function() {
$('.drag').each(function(i) {
$(this).addClass('test' + i)
});
var vtxt = $(this).text();
$("p").removeClass("on");
$("p:contains("+ vtxt +")").addClass("on");
});
});
The problem is when I add the variable vtxt to a contains: $("p:contains("+ vtxt +")").addClass("on");
问题是当我将变量 vtxt 添加到 contains: $("p:contains("+ vtxt +")").addClass("on");
I've tried several quotes but it just does not work. What is the right syntax for adding a variable to a contains?
我已经尝试了几个引号，但它不起作用。将变量添加到包含的正确语法是什么？
回答by Andrew Hare
Try this:
尝试这个：
$("p:contains('" + vtxt + "')").addClass("on");
回答by Nelo Mitranim
Old question, but I must leave a note for future generations. Andrew's answer (the accepted one) didn't work for me. What didwork was using a pre-made string as selector. Borrowing OP's examples:
老问题，但我必须为后代留下一张纸条。安德鲁的回答（接受的回答）对我不起作用。什么做的工作使用预制的字符串作为选择了。借用OP的例子：
var selector = "p:contains("+ vtxt +")";
$(selector).addClass("on");
回答by combuilder
I have used this answer in order to solve a similar problem.
I want to prevent the use of "and '
我已经使用这个答案来解决类似的问题。
我想阻止使用"和'
When using $("p:contains('" + valor + "')").addClass("on");, it works.
使用时$("p:contains('" + valor + "')").addClass("on");，它的工作原理。
But when using $('p:contains('" + valor + "')**'**).addClass("on"), it does not!
但是使用的$('p:contains('" + valor + "')**'**).addClass("on")时候就不行了！
