JavaScript 运行时错误：对象不支持“包含”属性或方法
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JavaScript runtime error: Object doesn't support property or method 'contains'
提问by Billy
I have written the below code in Master Page
我已经在母版页中编写了以下代码
<script type="text/javascript">
if (window.location.pathname.contains('Page1.aspx')) {
var js = document.createElement("script");
js.type = "text/javascript";
js.src = 'http://code.jquery.com/jquery-1.8.3.js';
}
if (window.location.pathname.contains('Page2.aspx')) {
var js = document.createElement("script");
js.type = "text/javascript";
js.src = 'http://code.jquery.com/jquery-1.9.1.js';
}
</script>
In asp.net application, I have three pages page1, page2,page3 which are inherited by the same Master Page. When I am trying to access the page3, it is displaying error: "JavaScript runtime error: Object doesn't support property or method 'contains'"
在asp.net 应用程序中，我有三个页面page1、page2、page3，它们由同一个母版页继承。当我尝试访问 page3 时，它显示错误：“JavaScript 运行时错误：对象不支持属性或方法‘包含’”
回答by Qantas 94 Heavy
Unless you have defined it yourself (which you haven't), there's no such thing as contains()for strings1. Use includes(), which is practically the same thing.
除非你自己定义了它（你还没有），否则没有contains()字符串1这样的东西。使用includes()，这实际上是同一件事。
Example:
例子：
console.log('abcdefg'.includes('def')); // true
console.log('abcdefg'.includes('ghi')); // false
If you have to support older browsers (like Internet Explorer), use indexOf():
如果您必须支持旧浏览器（如 Internet Explorer），请使用indexOf()：
console.log('abcdefg'.indexOf('def') !== -1); // true
console.log('abcdefg'.indexOf('ghi') !== -1); // false
Anyway, it is a horrible idea to use two different versions of jQuery on two pages - avoid it where possible.
无论如何，在两个页面上使用两个不同版本的 jQuery 是一个可怕的想法 - 尽可能避免它。
1:Technically this isn't 100% true: at one point there was a built-in contains()function, but it was renamed to includes()for compatibility reasons.
1：从技术上讲，这不是 100% 正确：曾经有一个内置contains()函数，但includes()出于兼容性原因将其重命名为。
