javascript JS - jQuery 数组 ignoreCase() 和 contains()
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JS - jQuery inarray ignoreCase() and contains()
提问by Obmerk Kronen
well, I am more of a PHP person, and my JS skills are close to none when it comes to any JS other than simple design related operations , so excuse me if I am asking the obvious .
好吧，我更像是一个 PHP 人，除了简单的设计相关操作之外，我的 JS 技能在任何 JS 方面几乎没有，所以如果我问的是显而易见的 .
the following operations would be a breeze in PHP (and might also be in JS - but I am fighting with unfamiliar syntax here ...)
以下操作在 PHP 中将是轻而易举的（也可能在 JS 中 - 但我在这里与不熟悉的语法作斗争......）
It is some sort of input validation
这是某种输入验证
var ar = ["BRS201103-0783-CT-S", "MAGIC WORD", "magic", "Words", "Magic-Word"];
jQuery(document).ready(function() {
jQuery("form#searchreport").submit(function() {
if (jQuery.inArray(jQuery("input:first").val(), ar) != -1){
jQuery("#contentresults").delay(800).show("slow");
return false;
}
This question has 2 parts .
这个问题有两部分。
- 1 - how can I make it possible for the array to be case insensitive ?
- 1 - 我怎样才能让数组不区分大小写？
E.g. - BRS201103-0783-CT-Swill give the same result as brs201103-0783-ct-sAND Brs201103-0783-CT-sor MAGIC magic Magic MaGIc
例如 -BRS201103-0783-CT-S将给出与brs201103-0783-ct-sAND相同的结果Brs201103-0783-CT-s或MAGIC magic Magic MaGIc
basically i need something like ignoreCase() for array , but I could not find any reference to that in jQuery nor JS...
基本上我需要像 ignoreCase() 这样的数组，但是我在 jQuery 和 JS 中都找不到任何对它的引用......
I tried toLowerCase()- but It is not working on the array (ittirating??) and also, would it resolve the mixed case ?
我试过toLowerCase()- 但它不能在阵列上工作（令人兴奋？？）而且，它会解决混合情况吗？
- 2 - How can I make the function to recognize only parts or combinations of the elements ?
- 2 - 我怎样才能让函数只识别元素的部分或组合？
E.g. - if one types only "word", I would like it to pass as "words", and also if someone types "some word"it should pass (containing "word" )
例如 - 如果只有一个类型"word"，我希望它通过 as "words"，如果有人输入"some word"它应该通过（包含“单词”）
回答by alex
Part 1
第1部分
You can process your array to be entirely lowercase, and lowercase your input so indexOf()will work like it's performing a case insensitive search.
您可以将数组处理为完全小写，并将输入小写，这样indexOf()就可以像执行不区分大小写的搜索一样工作。
You can lowercase a string with toLowerCase()as you've already figured out.
toLowerCase()正如您已经知道的那样，您可以将字符串小写。
To do an array, you can use...
要创建数组，您可以使用...
arr = arr.map(function(elem) { return elem.toLowerCase(); });
Part 2
第2部分
You could check for a substring, for example...
您可以检查子字符串，例如...
// Assuming you've already transformed the input and array to lowercase.
var input = "word";
var words = ["word", "words", "wordly", "not"];
var found = words.some(function(elem) { return elem.indexOf(input) != -1; });
Alternatively, you could skip in this instance transforming the array to be all lowercase by calling toLowerCase()on each elembefore you check indexOf().
或者，您可以在此实例中通过在检查之前调用toLowerCase()each来跳过将数组转换为全部小写。elemindexOf()
some()and map()aren't supported in older IEs, but are trivial to polyfill. An example of a polyfill for each is available at the linked documentation.
some()并且map()在较旧的 IE 中不受支持，但对于 polyfill 来说是微不足道的。链接文档中提供了每个 polyfill 的示例。
As Fabrício Mattéalso pointed out, you can use the jQuery equivalents here, $.map()for Array.prototype.map()and $.grep()with lengthproperty for Array.prototype.some(). Then you will get the browser compatibility for free.
正如Fabrício Matté还指出的，您可以在此处使用 jQuery 等价物，$.map()forArray.prototype.map()和$.grep()withlength属性 for Array.prototype.some()。然后您将免费获得浏览器兼容性。
回答by Jose Manuel Gomez Alvarez
To check if an array contains an element, case-insensitive, I used this code:
要检查数组是否包含不区分大小写的元素，我使用了以下代码：
ret = $.grep( array, function (n,i) {
return ( n && n.toLowerCase().indexOf(elem.toLowerCase())!=-1 );
}) ;
Here is a fiddle to play with array match case insensitive
这是一个玩数组匹配不区分大小写的小提琴
