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Asked: 2026-06-13T17:14:55+00:00

I have a value, and an array. I’m trying to see if the value

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I have a value, and an array. I’m trying to see if the value is contained within the array. I’m using jQuery’s ‘inArray’ method but the results keep telling me that it is not found.
What am I doing wrong?

here is the fiddle.
http://jsfiddle.net/p9xcb/

var array =  ["79C8A605-1384-4A51-8AC9-C53C1AE075D2", "E367CEEE-A344-4C63-B4B3-A1CC20D3DAF2", "1E3ED40E-935A-4895-960E-89FFD8CD81B9", "2E67F9E8-4770-497E-A938-0A145DA033AF", "35B33B09-6BD3-495E-9A3E-4B5D6DF8655E", "F419FB1F-4922-46B9-B651-8BB0D42510DD", "61FD263B-175E-4434-8A88-8E00418E2E14", null, "FF98229A-998C-49AD-9392-E4CE98115C0A", "C88B9D52-FE70-430C-B43D-D52F9B22E997", "1DDF2413-B453-42BB-8D78-7A7AAA94C353", "55D922B1-EBCD-4EC3-87A5-FA6AA38C9975", "0FA8079A-F76F-4CA5-B370-7B8B9AF2720A", "CF1971EF-E0C2-4C54-8131-A19FB14F2515", "A736854B-73A2-4282-85E0-6298D8AB815A", "DA280665-DC5E-4DF2-9FB1-924E1C8E4713", "9C73A934-9DDF-415C-A409-F2AC79493539", "FD950617-2C9C-4B6C-94F1-6C746699B636", "F184BBBE-C296-4F1D-9DD7-57F87D3B95A6", "676955FB-3F3D-4DC6-8F9D-A873A8440499", "5509E5C6-6650-4DF6-B7A9-49C8BC935B53", "7D88DCD6-431E-41EB-9A87-5C19C2D579FC", "509EA3D8-5B30-41F0-809B-D1E45BC30E3C", "6C4D6F4F-A188-4E6C-B40C-02AE4A5FFAAB", "710E2593-FE14-4CAB-B97C-95D96BB81266", "CBEB793E-A572-4995-8342-E9A48EF19E82", "A8C937F2-056C-46B4-8034-11CA4BB37A1D", "8E9B5E53-298B-4BDE-A696-20F102C28F12", "7BF7421C-CB21-4A44-BBA3-2CFD3A74C889", "F8D89224-7BB7-477F-BB8E-F5B2633A4111", "73F196CF-62F8-4F7A-9938-4F52404450E4", "B4D419D6-A5B8-4141-8C0E-ADCBEC72F2D8", "59ECF672-5C93-4E1E-8E30-6E0699874D61", "EC72A684-5888-48E1-99FD-FE455A50222F", "5D234D6D-E296-4D90-B87E-61FB6FB48702", "8EDD5718-E28A-4A4E-85BA-4DC9C072EAA8", "66FEA812-9945-4FFB-87CB-CCA828768FA0", "0025CB40-3016-4286-AD60-46685EDFD6A1", "508AC4D3-EA29-43A9-92CC-453FE2438D58", "030C5CBE-C227-4326-BED7-DB16A90D5A36", "2AAFF154-0FD0-4B60-9180-DE19A9E0890B", "64EBB0B4-81C1-46EB-8B1A-711A06E45FA3", "E1AA77B2-0E67-42A7-B7D7-A15D2A4EA448", "E9543440-E66E-4984-AC4E-091F161D33D6", "D93988D5-73D9-4988-B1A1-B48282F3C7B7", "6DC572B8-1F69-4A5C-81C7-6EAC617EBEE1", "BB56B36C-1D90-4B8D-ABF0-4ECD4052DCC1", "D1FEFB8D-84F4-4500-92F2-70FEE23F4B6E", "3A836ED4-639C-42C4-B945-375DC053FB61", "33672786-E964-4C3F-A3EB-7BF6634D13A0", "7F76C892-AEC1-4901-80BE-B93DFF59D159", "0E92F1AD-5C09-4B3D-BAF5-5D62BA3440EF", "73E50616-DCA7-4E83-B81F-100C21A18C49", "CF89704A-BD58-4D41-A5B5-10BAFC6F8085", "0D5CBF2A-3699-4968-A2DC-F6EA61D6C7C1", "FED50D50-86E8-42E2-8CD4-17DC01BB966C", "81EEFFA0-D172-4BC3-8474-2C55E6CB06CA", "8FA6CBBD-D5AC-431D-B1E3-C0D1BA48ECCA", "7EEA9381-F0F0-4252-BF29-D15A5A0283C6", "0FFDE30B-E4C3-40CC-A292-566D54D05821", "E24EE39E-0FDE-4C20-B61C-E5C07B483CF8", "82F6B86F-6EAB-42B4-B19D-CA6EAFF83A92", "7B663073-6296-4A08-89AF-7051EAFC3E8A", "EA36E8B5-A266-473C-A076-96A605A856B9", "4A99A5A0-FBF3-4AC6-A34A-52E761B98C8A", "26513617-D98B-44D9-BDD5-2FFCB8C7783B", "67F93D0F-E145-4447-A7B8-E3D1E944B88C", "9798FD1D-B781-4420-A37E-622E04E69672", "1A872624-E81B-45B7-B6FD-ED229AE54042", "092C0992-FAED-4E74-AB3E-6553F5261EF2", "76B94E6B-BE6B-43F2-ABBD-67A3B92C33B9", "AADF1B4D-F32E-4C0C-B4FC-EAC051338B8C", "E8A2479D-B1FC-4B67-AC94-C1AB8E1C7298", "8F7350C0-867D-461A-92D9-225CF8E91D60", "E742D55B-ADF0-4ADF-A3C9-EC4B3BAA832A", "320EBB4F-F0AB-47E7-A5B6-334429F8DEC8", "CEF5D66B-5EF2-468B-A9BE-06B0BC05E917", "CC6D2205-EB58-414D-A404-ED7B743E385E", "7D7EB4D0-BE31-4F28-928D-8E1FC5C947F0"];

var value = "CC6D2205-EB58-414D-A404-ED7B743E385E";

$('body').html($.inArray(value, array));​

Edit:

If I run this code

if ($.inArray(value, array)) {/*this will never be called, why?*/}

I will never see anything where /*this will never be called, why?*/ section is.

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1 Answer

  1. Editorial Team

    You should first understand the concept of truthyness/falseyness in javascript. The following values will evaluate inside a boolean operator as false

    undefined
null
empty string
false
0

    And the following will evaluate true

    non-null object reference
non-empty string
true
any non-zero number

    Now do you see the problem using

    if($.inArray(value,array)){

}

    Hint: Not finding the element (-1) will evaluate true, finding the element in the first position (0) will evaluate false. Finding the value in any element after the 1st will evaluate true.

    The easy fix is to use:

    if ($.inArray(value, array) >= 0)
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