Jquery inarray Copy link KingSora commented Oct 24, 2018 Jul 6, 2016 · 配列内の値の存在を確認する. Valor devuelto: Devuelve el índice del elemento en Jul 16, 2012 · 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 . inArray, you can (quoting): Search for a specified value within an array and return its index (or -1 if not found). inArray() method. inArray() always return -1 with an array of object I have an array of object, that contain columnNames. Commented Jun 13, 2020 at 3:49. inArray()`是一个常用但常被忽视的工具。本文将深入探讨`inArray`的功能，语法及实际应用，并通过代码示例帮助读者更好地理解。 jQuery. It doesn't have any provisions for a comparison function. inArray()方法用于在数组中查找指定值，并返回其索引值。 Aug 30, 2010 · The second most upvoted answer here is on the closest track possible to a one-liner jQuery method of the intended behavior the OP wants, but they stumbled at the end of their code, and it has a flaw. 最近时间紧迫,今天抽了些时间回过头来看 jQuery中文文档 中对数组的介绍,顺便对jQuery数组做个总结. inArray( value, array [, fromIndex ] ) Jan 19, 2025 · jQuery. inArray(element, arrayVariable); Jan 29, 2020 · jQueryで配列の値を検索する方法をサンプルコードと共にご紹介します。 大まかに分けて、$. inArray(4, arr); //0 jQuery Apr 19, 2023 · 3. Remember, the index starts from 0 so when the first element matches the searched value, the method returns 0. Aug 2, 2010 · Thank you to @Drew Wills. Syntax – jQuery. Return Value. It cross-browser compliant and can perform a binary search if your data is sorted. inArray (4, arr)); $ spans. May 3, 2011 · Use Underscore. inArray()的返回值为被搜索值在数组中的索引位置。如果找不到该值，则返回-1。需要注意的是，jQuery. Apr 15, 2019 · 文章浏览阅读6. inArray(val, arr [, Index]) Parámetros: el método inArray() acepta algunos parámetros que se mencionan anteriormente y se describen a continuación: val: El valor a buscar en una array. However, I'm having speed and memory issues and one of the most called methods according to my profiler is jQuery. The second parameter is the arrayObj from which we will look for mentioned value. inArray() method is designed to search for a specified value within an array and return its index if found, or -1 if not found. inArray (" Pete ", arr, 2)); }) </ script > To get the index of any item in an array, use the jQuery. inArray()方法 jQuery 杂项方法 实例 返回数组中指定元素的索引值 [mycode3 type='html'] 'John' 在索引值为 的位置被找到 4 在索引值为 的位置被找到 'Karl' 未被找到，所以返回 'Pete' 在数组中，但是不在索引值大于2的位置，所以返回 [/mycode3] [myco. jQuery 구문 중에 배열 요소를 찾을 때 사용해 보아요~ Mar 25, 2013 · The jQuery inArray function returns the index of the value. inArray()返回的索引值是从0开始计数的。 下面是一个示例： jQuery 使用jQuery的inArray方法对JavaScript对象数组进行查找 在本文中，我们将介绍如何使用jQuery的inArray方法来对JavaScript对象数组进行查找操作。 JQuery inArray()方法 jQuery中的inArray()方法是用来搜索一个数组中的特定值，并返回其索引（如果没有找到则为-1）。 语法: jQuery. Jun 20, 2020 · jQuery. I rewrote it as this: function inArrayCaseInsensitive(needle, haystackArray){ //Iterates over an array of items to return the index of the first item that matches the provided val ('needle') in a case-insensitive way. inArray(val, arr [, Index]) Paramètres : la méthode inArray() accepte quelques paramètres mentionnés ci-dessus et décrits ci-dessous : val : la valeur à rechercher dans un array. 返回值 jquery 参数 value (any) : 用于在数组中查找是否存在 array (array) : 待处理数组。 Sep 26, 2011 · Your object is not an array. I propose a name change to $. inArray( value, array [, fromIndex ] ) 示例 描述: 查看对应元素的位置. arr: Any array Nov 21, 2024 · The jQuery. It's pretty neat. jQuery 如何使jQuery. The inArray() method accepts three parameters that are described below: val: The value to search in an array. < script > $ (function {var arr = [4, " Pete ", 8, " John "]; var $ spans = $ (" span "); $ spans. inArray() returns index of the item in the array, or -1 if item was not found. It provides a convenient way to perform array searches without the need for complex loops or custom functions. inArray only work on array-like objects with a length and a set of properties named 0 through length - 1. If the value is found, it returns the index position of the value in the Aug 23, 2017 · 返回值. inarray function as I need to be able to find a value in an array so that I can return other values from the same array "line", such as its ID. Índice: índice de la array desde la que comenzar la búsqueda. Hot Network Questions I can't count on my coworkers. inArray()？ 为了正确使用jQuery. inArray（）で大文字と小文字を区別しない方法はありますか？ jQuery. indexOf, and the creation of a "real" inArray function, which returns true/false if element is in array. So, why not call that function twice : one time for 'foo', and one time for 'bar': Apr 23, 2024 · jQuery offers several utility methods in the $ namespace. isArray method instead. 존재하지 않으면 -1 을 되돌려준다. <script type="text/javasc Jul 2, 2012 · 맨 마지막 인자 2에 주목하세요. inArray(value,array) --value是要查找的值，array是被查 Jul 4, 2016 · $. I was reading the documentation for inArray earlier this morning, and I love the idea of a cross-browser indexOf. Jul 22, 2020 · Jquery inArray() method to Check Value Exist in an Array $. jquery Method [ jQuery. inArray( value, array [, fromIndex ] ) Returns: Number. arr: Cualquier array como objeto. inArray()`来判断数组中是否包含某个特定的值。 jQuery $. eq (1). inArray(value,array) --value是要查找的值，array是被查找的数组。 使用$. ), it's the kind of ugly, jQuery-ish solution that most sane people wouldn't tolerate. inArray()をてっきり値が配列内にあるかどうかの論理値を返すメソッドかと思っていたら、インデックス数を返すメソッドで、ECMA5のArray. jQuery: question about Nov 1, 2012 · Possible Duplicate: How to check if jQuery object exist in array? is there any way to determine if a dom element is in an array of dom elements? i. jQuery 代码: var arr = [ 4, "Pete", 8, "John" ]; jQuery. inArray()，我们需要注意以下几点： 1. inArray but it couldn't find any thing in my array , I used it this way : jQuery. arr : tout array comme un objet. 强烈建议你打开DEMO演示后再看下面的详解: 点此查看DEMO1. js. 0. inArray（） inArray 定义 ：jQuery. the following Sep 6, 2012 · That's not how . How to pass a null value in JUnit 5 parameterized tests. inArray() work similar to indexOf() method. inArray function is used to return a value's index in an array if value is available in the array, otherwise -1 if value is not in the array. 1. Return -1 if it’s not found. inArray(val, arr [, Index]) 参数：inArray()方法接受上面提到和下面描述的几个参数： val:要在数组中搜索的值。 arr:任何类似对象的数组。 Index:从中开始搜索的数组的索引。 返回值：它返回数组中元素的索引。 范例1：在此的示例inArray()方法搜索数组中的元素 I don't like $. 예제 코드 AAAA BBBB CCCC DDDD 버튼 p태그의 인덱스를 jQuery. inArray() ] - 배열에서 특정 문자를 찾는 메소드 문법 jQuery. inArray returns an integer! So when it is at index at 0 it would be a falsely value! You need to check > -1 Jun 23, 2019 · jQuery. I sometimes deal with arrays of objects, though, so it would be neat to have the ability to use inArray to give the index of a particular object based on a function that you pass. It searches for an array element that's equal to the value you pass in. Aug 3, 2014 · jQuery. Commented Oct 25, 2017 at 8:33. inArray( value, array [, fromIndex ] ) Oct 9, 2024 · jquery inArray 变量，#jQuery中的inArray函数全解析在Web开发中，jQuery凭借其简洁易用的API受到了广泛的欢迎。而在jQuery众多实用函数中，`$. inArray() の使い方. inArray（）返回数组中该项的索引；如果未找到该项，则返回-1。 Read more here: jQuery. 2 jQuery. An English sentence would say, "If an element is in an array, do something, otherwise do jQuery $. inArray() 在这里阅读更多： jQuery. 2追加 サンプル Mar 17, 2025 · The jQuery inArray() method is used to find a specific value in the given array. inArray (" Karl ", arr)); $ spans. Comments. I have an array (required) of input ids which are required. inArray() Jul 31, 2024 · jQuery. inArray()函数的返回值为 Number类型 ，返回指定值在数组中的索引。 如果没有找到，则返回 -1。 如果数组中存在多个相同的值，则以查找到的第一个值的索引为准。 引数arrayにはjQuery要素などオブジェクトも渡せるのでfor-in文としても使用可能。 （これはArray. inArray #4204. indexOf() 같이 사용하는 거니까 그리 어려운 개념은 아니네요. inArray. These methods are helpful for accomplishing routine programming tasks. What's the word on the street about its performance? Should I switch to a simple for loop? My specific function is: Oct 25, 2017 · jQuery. inArray( value, array [, fromIndex ] ) => Number 说明：在数组中搜索指定值并返回其索引(如果未找到则返回 -1)。 添加的版本： 1. So, either dato_in_mod is not being found in an array named mail_address or you have those arguments wrong. If the value found, the method returns the index value, i. Aug 17, 2010 · I'm struggling with this, I am still new to javascript and am trying the jquery $. Sep 19, 2018 · jQuery. Oct 24, 2018 · Deprecate jQuery. inArray()对大小写不敏感 在本文中，我们将介绍如何通过使用jQuery中的inArray()方法实现大小写不敏感的检索。 阅读更多：jQuery 教程 jQuery. inArray (" John ", arr)); $ spans. InArray() if i have a collection of objects. 2; please use the native Array. Asking for help, clarification, or responding to other answers. inArray(), ¿cómo usarlo bien? Preguntado el 18 de Septiembre, 2013 Cuando se hizo la pregunta 36685 visitas Cuantas visitas ha tenido la pregunta 5 Respuestas Aug 14, 2023 · # 使用Jquery inArray方法判断对象在实际的前端开发中，我们经常需要对数组或对象进行查找操作。在jQuery中，提供了一个非常方便的方法`$. Jul 5, 2022 · jQuery. For a complete reference on jQuery utility methods, visit the utilities documentation on api. 有时候，当我们使用inArray方法进行值的查询时，却发现无论如何都返回-1，即使该值在数组中存在。 Can someone tell me what I may be doing wrong here? var dateList = new Array(); dateList. inArray(. indexOf() method. each(array Jan 7, 2014 · I'm doing very frequent searches in arrays of objects and have been using jQuery. indexOf(array, value, [isSorted]) Returns the index at which value can be found in the array, or -1 if value is not present in the array. push(new Date(2009,7-1,30)); Sep 9, 2013 · using jquery. inArray(val, arr [, Index]) 参数： inArray()方法接受上面提到的几个参数，并在下面描述。 val: 要在数组中搜索的值。 arr:任何类似数组的对象。 jQuery - 判断值是否在数组中 在本文中，我们将介绍如何使用jQuery来判断一个值是否存在于数组中。在JavaScript中，我们经常需要判断一个值是否在一个数组中，而jQuery为我们提供了一些方便的方法来实现这个功能。 jQueryのinArray()を使って配列の要素を検索する方法について解説しています。inArray()とは配列内の要素を検索し、検索した要素のインデックスを返すメソッドであり、一次元配列だけでなく二次元配列や三次元配列のような多次元配列の中からでも値を検索することができます。 指定した値が配列に含まれていれば、そのインデックス番号を返します。 $. inArray() to search an array for a specific item and provide the user with feedback if the item is or is not in the array. It also works with string and an Array. inArray() instead of $. , the position of the item. Apr 7, 2011 · With jQuery. 最近的项目中用到的比较多,深感实用,一步到位的封装了很多原生js数组不能企及的功能. Feb 21, 2016 · First of all the value of instance_name will not be updated on blur as you are saving the value outside of the blur event. $. 예를 들어 jQuery. 2 新增该静态函数。 jQuery. inArray("John", arr); //3 jQuery. inArray( value, array ,[ fromIndex ] )而[ fromIndex ]为可选参数。也就是用法非常简单，传递一个检测的目标值，然后传递原始的数组，可以 Dec 26, 2012 · jQuery. 理解返回值. inArray() jQuery inArray function returns the index position of the value when it finds the value otherwise returns -1. You need to search your non-array manually. inArray() method is similar to JavaScript's native . inArray( value, array [, fromIndex ] ) PHP's in_array was created before jQuery's inArray, so I'm not sure of the origin of the choice of function name jQuery took, but if it was from PHP, they either named the function incorrectly or created the function with a return value that is incorrect. Change the code in order to compare the input's value (wich is a string) to the array elements: $. SyntaxjQuery. Dec 20, 2023 · jQuery inArray() method This inArray() Method in jQuery is used to search for a specific value in an array and return its index (or -1 if not found). com. Read more here: jQuery. inArray() は、配列の中に特定の値が存在するか、存在する場合のインデックス番号を返す便利な関数です。JavaScriptやjQueryのプログラミングでよく使われます。 基本的な使い方. jQuery. inArray() works. val(); inside the blur event listener. inArray() returns -1 when the object you are searching for is not found in the array you are searching within or if you don't have the arguments correct. The $. Note: This API has been deprecated in jQuery 3. Jan 9, 2018 · 初心者向けにjQueryのinArrayメソッドの使い方について現役エンジニアが解説しています。inArrayメソッドは、配列の中に指定された要素が含まれているのかどうかを検索できるメソッドです。ifなどの条件分岐でよく使うメソッドになります。 Feb 25, 2020 · 26. inArray(val, arr [, Index])Parameters The inArray() method accepts three parameters that are described below: val: The value to search in an array. inArrayを使用して値に対応したキーを取得する方法と、$. inArray returns -1 regardless of value. 2 新增该静态函数。jQuery. 温故,知新. ) the array is huge I am looking for a fast an effective way to get results from this array I used the JQuery function jQuery. inArray("AAAA", arr); arr이라는 배열에서 "AAAA"라는 문자를 찾습니다. jQuery では、inArray 関数を使用して、配列内の値の存在確認を行うことができます。 数値と文字列は区別されます。 jQuery. If the array contains the string 'All' then all inputs are required. Add a comment | Start asking to get answers. array에는 배열의 이름을 넣습니다. You should change your code to be >=0 Nov 15, 2018 · jQuery【inArray】配列要素の検索 jQueryのinArrayメソッドは、配列要素の検索を行うメソッドです。 今回は、jQueryのinArrayメソッドの使用方法と、inArrayメソッドを使用したインデックス番号の検索方法について解説いたします。 Feb 22, 2016 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Description: Search for a specified value within an array and return its index (or -1 if not found). Let us knnow the syntax to use inArray method, $. Feb 22, 2013 · jQuery. 이때 존재하면 배열안의 해당 인자값의 index 번호를 되돌려준다. Looking at that documentation page, it doesn't seem you can pass more than one value to that function. inArray( value, array [, fromIndex ] ) Aug 2, 2010 · /jQuery. inArray()函数用于查找一个指定值在数组中的位置，并返回该位置的索引值。 使用方法 jQuery. inArray(value, arrayObj, fromIndex) Explanation: The jQuery inArray method is used to search for a specific value/object from an Array and it the first parameter it accepts is the value which needs to be searched. inArray()函数接收两个参数：需要查找的值以及要在其中搜索的数组。 Feb 29, 2024 · The jQuery. inArray( value, array [, fromIndex ] ) you seem to be passing arguments in the wrong order – apokryfos. jquery. It’s much more pleasant to use it now than… Best of Modern JavaScript — Proxies and Object OperationsSince 2015, JavaScript has improved immensely. inArray() : 在数组中查找指定值并返回它的索引（如果没有找到，则返回-1）。 - jQuery API 中文文档 | jQuery 中文网 Oct 4, 2020 · Spread the love Related Posts Best of Modern JavaScript — Control Object OperationsSince 2015, JavaScript has improved immensely. when i check if a particular columnName exists it alwayz returns -1 Jul 29, 2016 · jQuery. inArray(value, array); array: 検索対象の配列 jQuery inArray 메소드는 배열에서 값을 검색하고 부울 값이 아닌 색인을 리턴하는 데 사용됩니다. eq (3). Provide details and share your research! But avoid …. Index: Index of the array from which to begin search. KingSora opened this issue Oct 24, 2018 · 4 comments Labels. forEachを使用した際も同じ事がいえますが）関数オーバーヘッドがあるのでパフォーマンスを求められる際はfor文が無難。 May 24, 2012 · 예전에 필요에 의해서 자바스크립트로 in_array 함수를 만들었던 적이 있다. eq (0). each(function(){ May 22, 2012 · Your code appears unnecessarily complicated. inArray() 는 괄호안에 찾을 인자값(Value)이 들어가는데 해당 인자값이 배열(Array)안에 존재하는지 확인할 때 사용한다. inArray()函数用于在数组中搜索指定的值，并返回其索引值。如果数组中不存在该值，则返回-1 。它的 语法：jQuery. It returns the index of element in an array, or -1 if element not found. Here's a snippet which adds a simple contains(str) method to your arsenal: Jul 15, 2012 · You are comparing a jQuery object (jQuery('input:first')) to strings (the elements of the array). Index : Index du array à partir duquel commencer la recherche. inArray(value, array) value에는 검색하려는 값을 넣습니다. . Nov 26, 2014 · jquery. container img"). inArrayメソッドを使って、配列から特定の要素を検索する方法を解説。Internet Explorer 8以前の環境ではJavaScriptのindexOfメソッドをこれで代替しよう。 jQuery. inArray method is used to renturn a value's index in an array or -1 if the value is not found in the array. inArray() to work. In this blog, let us know how can we check whether particular element exists in an array or not in jQuery. inArray( value, array [, fromIndex ] ) Returns: Number Description: Search for a specified value within an array and return its index (or -1 if not found). Hence, you need to move var instance_name = $('#instance_name'). inArray() jQuery Hello World Example; Categories jquery Tags jquery, jquery array. eachの繰り返し処理を活用して調べる方法が May 6, 2024 · この記事では「 【jQuery入門】配列の使い方(作成・追加・検索・取得)まとめ！ 」について、誰でも理解できるように解説します。この記事を読めば、あなたの悩みが解決するだけじゃなく、新たな気付きも発見できることでしょう。お悩みの方はぜひご一読ください。 Jun 13, 2014 · You are not storing any references to the jQuery objects, $("#div1") will return a new jQuery object containing your dom element, you are comparing two different jQuery objects containing the same dom element. how can I search for an item in this array according to the first entry in each item (r1,r2,. push(new Date(2009,7-1,29)); dateList. arr: Any array like object. For the left arrow key (37) it is returning 0 and it is being interpreted as false. inArray（）で大文字と小文字を区別しない方法はありますか？ タイトルはそれを要約します。 jQuery. inArray will work just fine if you are using the same reference in the array as when you do use the inArray method. inArray() function is a built-in method in jQuery that is used to search for a specified value within an array. inArray(). inArray( value, array [, fromIndex ] )参数参数描述value任意类型用于查找的值。 jQuery是一个广泛应用于前端开发的JavaScript库，其中包含了许多常用的函数和工具。其中，jQuery. text (jQuery. Getting JQuery. inArray()函数用于在数组中搜索指定的值,并返回其索引值。如果数组中不存在该值,则返回-1; $. $(". _. After saying that the method returns -1 if the element is not in the array, Mar 18, 2022 · jQuery. 따라서 배열에 값이 있는지 확인하려면 아래 연습을 따르십시오. inArray()函数用于在数组中搜索指定的值，并返回其索引值。如果数组中不存在该值，则返回 -1。该函数属于全局jQuery对象。语法jQuery 1. 인덱스 기준 2보다 큰 배열 요소부터 검색하는 것입니다. inarray(value,array) 确定第一个参数在数组中的位置(如果没有找到则返回 -1 )。 determine the index of the first parameter in the array (-1 if not found). inArray(value, array) 第一引数に渡した値が配列中にあれば、そのインデックスを返します。 例え該当する値が複数あっても、最初に見つかった時点でその値を戻します。 Mar 12, 2015 · jQuery逆引きリファレンス。$. Using jQuery's inArray method with a JavaScript associative array (or object) 0. Core. inArray(val, arr [, Index]) Parameters. Sep 20, 2013 · in my validation the required fields can change. inArray( search-value, value-from-which-search); Example To get the index of any item in an array, use the jQuery. It searches the element in an array, if it’s found then it return it’s index. It’s much more pleasant to use it now than… How To Do Common JavaScript Object OperationsDefine New Object jQuery. 그리고 값을 찾지 못하면 -1을 반환합니다. inArray(value, array) 第一引数に渡した値が配列中にあれば、そのインデックスを返します。 例え該当する値が複数あっても、最初に見つかった時点でその値を戻します。 jQuery inArray method. 8k次。jQuery. inArray() 方法jQuery 杂项方法实例返回数组中指定元素的索引值 John 在索引值为 的位置被找到 4 在索引值为 &l_来自jQuery 教程，w3cschool编程狮。 Jul 25, 2011 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. inArray() – Nate. inArray( value, array [, fromIndex] ) 1. indexOf _. inArray( value, array [, fromIndex ] ) 参数 参数 描述 value 任意类型用于查找的值。 array Array类型指定被 May 7, 2012 · I was reading jQuery's documentation about the inArray method and I can't really understand the meaning of one sentence. prototype. indexOf()とほぼ同じ機能だった(厳密には違うので各ドキュメントを参照されたし)… An example of using jQuery. version added: 1. inArray()方法简介 jQuery. This will also produce a sorted list of the items, and avoids expensive DOM (and jQuery) calls being used within the comparator function: jQuery. I am leaning toward naming it incorrectly. jQuery. inArray(value, array, [fromIndex]) 其中，value表示要搜索的值，array表示要搜索的数组，fromIndex是可选参数，表示从何处开始搜索。 问题描述. Jun 16, 2020 · jQuery的数组处理,便捷,功能齐全. inArray()方法必须注意的点,否则会掉坑 (1)看如下代码: 上面这段代码不仔细 Jan 6, 2017 · For those in the present future, use jQuery. e. Otherwise, if the value is not present or not found, the inArray() method return May 1, 2023 · jQueryのinArrayメソッドは、配列の中に特定の要素が含まれているかどうかを検索することができるメソッドです。返り値として、文字列が含まれていなかった時には「-1」を、含まれていた場合は対象のテキストの先頭を0として何文字目からはじまるかというインデックス番号を返します。 Jan 14, 2024 · 3. May 6, 2024 · この記事では「 【jQuery入門】inArray()で配列要素を検索する方法まとめ！ 」について、誰でも理解できるように解説します。この記事を読めば、あなたの悩みが解決するだけじゃなく、新たな気付きも発見できることでしょう。お悩みの方はぜひご一読ください。 如何正确使用jQuery. inArray( 値, 配列 [, fromIndex ] ) 戻り値: Number 説明: 配列内で指定された値を検索し、そのインデックスを返します (見つからない場合は -1)。 追加されたバージョン: 1. inArray()函数用于在数组中搜索指定的值，并返回其索引值。如果数组中不存在该值，则返回 -1。 该函数属于全局jQuery对象。 语法 jQuery 1. It returns the index when a match is found, and -1 when it doesn't find a match. inArray( value, array [, fromIndex ] ) Sep 18, 2013 · jQuery. eq (2). tgkycivvcsxucbsfctxrsfvxapztvpbqyheylffwwctunfjnpdqtrbkughlksdobgem