Javascript 另一个“对象不支持此属性或方法” - jQuery
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Yet Another "Object doesn't support this property or method" - jQuery
提问by Chase Florell
I just switched my App to run on MVC3 and the Razor view engine, and now I'm getting a JavaScript error. The thing is, nothing has changed on the JavaScript side of things... it worked before.
我刚刚将我的应用程序切换为在 MVC3 和 Razor 视图引擎上运行，现在我收到了 JavaScript 错误。问题是，JavaScript 方面没有任何改变……它以前有效。
Here's the code
这是代码
<script type="text/javascript" src="http://ajax.microsoft.com/ajax/jquery/jquery-1.4.2.min.js"></script>
<script type="text/javascript">
var json_region = [{"value":365,"label":"Calgary"},{"value":368,"label":"Canmore"},{"value":393,"label":"Edmonton"}]
$(function() {
$('#UserRegion').autocomplete({
source: json_region,
selectFirst: true,
select: function( event, ui ) {
$('#RegionID').val( ui.item.value );
$('#UserRegion').val( ui.item.label );
return false;
}
});
});
</script>
<script type="text/javascript" src="/Extras/urbannow.js/1"></script>
<script src="/Assets/Scripts/jquery.ui.autocomplete.selectfirst.js" type="text/javascript"></script>
<script src="/Assets/Scripts/wmd.js" type="text/javascript"></script>
<script src="/Assets/Scripts/showdown.js" type="text/javascript"></script>
<script src="http://ajax.microsoft.com/ajax/jQuery/jquery-1.4.2.min.js"></script>
<script src="http://ajax.microsoft.com/ajax/jquery.validate/1.7/jquery.validate.min.js"></script>
<script src="/Assets/Scripts/jquery.validate.unobtrusive.min.js" type="text/javascript"></script>
And this is erroring
这是错误的
$('#UserRegion').autocomplete({
The console says
控制台说
SCRIPT438: Object doesn't support this property or method
SCRIPT438: 对象不支持此属性或方法
And I just can't figure this one out.
我就是想不通这个。
回答by RPM1984
You're including jQuery twice.
您将 jQuery 包含两次。
回答by Hamish
You're calling .autocompleteimmediately after including the base jQuery library - which does not include the autocomplete plugin. Fix the order of your script references and make sure the autocomplete plugin is included before you try to use it.
您.autocomplete在包含基本 jQuery 库后立即调用- 不包含自动完成插件。修复脚本引用的顺序，并确保在尝试使用之前包含自动完成插件。
回答by Elijan Sejic
load this BEFORE you custom script call
在您自定义脚本调用之前加载这个
<script src="/Assets/Scripts/jquery.ui.autocomplete.selectfirst.js" type="text/javascript"></script>
<script src="/Assets/Scripts/jquery.ui.autocomplete.selectfirst.js" type="text/javascript"></script>
or at very best custom code should be after all your JavaScript files. so , your code should look like something like this
或者最好的情况是自定义代码应该放在所有 JavaScript 文件之后。所以，你的代码应该像这样
<script type="text/javascript" src="http://ajax.microsoft.com/ajax/jquery/jquery-1.4.2.min.js"></script>
<script type="text/javascript" src="/Extras/urbannow.js/1"></script>
<script src="/Assets/Scripts/jquery.ui.autocomplete.selectfirst.js" type="text/javascript"></script>
<script src="/Assets/Scripts/wmd.js" type="text/javascript"></script>
<script src="/Assets/Scripts/showdown.js" type="text/javascript"></script>
<script src="http://ajax.microsoft.com/ajax/jquery.validate/1.7/jquery.validate.min.js"></script>
<script src="/Assets/Scripts/jquery.validate.unobtrusive.min.js" type="text/javascript"></script>
<script type="text/javascript">
var json_region = [{"value":365,"label":"Calgary"},{"value":368,"label":"Canmore"},{"value":393,"label":"Edmonton"}];
$(function() {
$('#UserRegion').autocomplete({
source: json_region,
selectFirst: true,
select: function( event, ui ) {
$('#RegionID').val( ui.item.value );
$('#UserRegion').val( ui.item.label );
return false;
}
});
});
</script>
回答by Alexey Semenko
Duplicate jQuery declaration, check View Source of page
重复 jQuery 声明，检查页面的查看源
