uncaught typeerror cannot read property addeventlistener of undefined

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Vue2.xx prompts [vue warn]: Error in render: "typeerror: cannot read property 'img 'of undefined"

Item is a piece of data requested from the background, which contains IMG, but prompts that IMG is not definedCode of the Child component when the parent component transmits data to the child component:Tip:Cause: it may be that the page rendering and request data are asynchronous operations, the data has not been requested to end, the page has started rendering, so at the beginning of reporting undefined variables, after the data acquisition is comple

Uncaught Typeerror:cannot Read Property ' Msie ' of undefined

Because the diagram is convenient, copied someone else wrote a Jquerry plug-in, run-time "var pos = ($.browser.msie parseint ($.browser.version) Search the Internet, http://stackoverflow.com/questions/14923301/. Uncaught-typeerror-cannot-read-property-msie-of-undefined-jque

Reactjs uncaught typeerror:cannot Read Property ' location ' of undefined

Reactjs uncaught typeerror:cannot Read Property ' location ' of undefinedReactjs routing configuration How to jump unsuccessful domestic search engine find half a day can not find useful information so GoolgePackage.json inside Configuration: "React-router": "^3.0.0" changed to 3.x on it, change the implementation of NPM installOriginal reference: https://github.

JQuery Mobile Error Uncaught typeerror:cannot Read property ' concat ' of undefined

Write a demo of jquery mobileOpened with a browser, found no style, opened the console found a bug reportedOn the stack overflow looked up, because jquery mobile and jquery version mismatch, my current version of jquery Mobile is 1.4.5,jquery version 3.2.1, jquery again under the 2 version of the trial, It's possible for me to 1.9.1.JQuery Mobile Error Uncaught typeerror:cannot Read

Uncaught Typeerror:cannot Read Property ' call ' of undefined jquery.validate.min.js:28

Recently, when doing form verification, the Addmethod method of his own writing always does not work, tossing the time close to the day. The following errors are reported uncaught Typeerror:cannot Read Property ' call ' of undefinedjquery.validate.min.js:28 First look at the layout of my own page. top.jsp The above-referenced form for the top.jsp hea

Solution to "uncaught typeerror: Property 'submit 'of object # is not a function"

Today, I encountered a problem and found that many people on foreign websites are asking questions. Some people suspect that this is an unknown bug .. SeeCode: If you click submit, the following error will be reported: "Uncaught typeerror: Property 'submit 'of object # Actually, it's actually .. All of this is because you wrote the button for type and th

Troubleshoot Discuz and jquery incompatibilities--drop-down list not available (uncaught typeerror:cannot set property ' position ' of undefined)

Problem Description:Recently learned to use Discuz to imitate a portal site, inside to the navigation bar to make a sliding effect, to use jquery, will use jquery reference to Header.htm, as shown in:However, since Discuz uses PHP and its own mechanism, the $ in jquery will conflict with the Common.js and forum.js of Discuz itself, resulting in the following error causing the drop-down listWorkaround:Workaround: Redefine jquery's $, for example, I will use JQ to represent jquery's $At the end of

Parse server real-time query error: TypeError not captured: Unable to read OnNext definition of property

Server is fully provisioned but in client codeLet query = new Parse.query (' Notification ');Let subscription = Query.subscribe ();Subscription.on (' Open ', () = {Console.log (' subscription opened ');});Throw error: TypeError not captured: Unable to read the subscription defined by the property "OnNext". Line No. 3894Line No. 3894key: ‘pushData‘,Value:function

Three.js three.js uncaught typeerror:cannot Read property ' getextension ' of NULL

When debugging Three.js execution loading curtain, suddenly burst out this error three.js uncaught typeerror:cannot Read property ' getextension ' of NULL, query for half a day and no results foundFinally suddenly thought is not the browser setup problem, check the WebGL, sure enough reinstall the browser does not open, after normal open, display normalMark, plea

JQuery uncaught typeerror:cannot Read property param

Prompt for errors when you do not need to validate a select Uncaught typeerror:cannot Read property ' param ' of NULL When viewing the source code, it is found that the following function can cause problems when the select does not add any events: Datarules:function (Element) {var method, value,Rules = {}, $element = $ (element);For (method in $.validator.meth

Uncaught Typeerror:cannot Read Property ' style '

JS in the browser reported the following error (in Chrome): uncaught typeerror:cannot Read Property ' style ' of NULL browser if the following error is reported (in Chrome):uncaughttypeerror:cannotread property ' style ' ofnull what does this error mean? (You need to master the processing of JS common errors and common

Typeerror:cannot Read property ' url ' of undefined

IntroductionThe use of react-router feel or there is a certain "curve", first of all to be familiar with ES6 and do not say, for JSX extended grammar and React-router about the route of the expression of a little sloppy can not. When the error appears title, I searched the network, unexpectedly did not find several places to refer to. There is one of the following:https://teamtreehouse.com/community/typeerror-cannot-

NodeJS-Express4.0 error: Cannot read property & amp; #39; Store & amp; #39; of undefined

An error occurred while using mongodb for Express. // Settings. js Module. exports = { CookieSecret: "xxxx ", Db: "dbname ", Host: "localhost ", } // App. js Var express = require ("express "); Var settings = require ("./settings "); Error code for loading connect-mongo: Var MongoStore = require ("connect-mongo") (express ); App. use (express. session ({Secret: Settings. cookieSecret,Key: Settings. db,Cookie: {maxAge: 1000*60*60*24*30}, // 30 daysStore: new External store ({Db: Settings. db})}

[JQuery] Cannot read property ' Msie ' of undefined wrong solution--turn

Initial use of Yii's Srbac module. Cannot read property ' MSIE ' of undefined error appears. Online Search, find the following article. Using the method of patching at the end of the text, successful. Thank.===============================http://blchen.com/jquery-can-not-read-proper

Javascript-react get Array data when encountered cannot read property ' map ' of undefined

"} ] }} This is the REACT code It should be because when the first render is initialized the asynchronous data is returned before the listdata is undefined, giving an initial value []. Did you see the error message? Cannot read property 'map' of undefined the obj

When the Jquery2 version conflicts with dialog, it is reported that the wrong solution of cannot read property ' Msie ' of undefined

today, when I was doing angular's project, Because need to use ui-select2 so introduced Bootstrap.js, and then bootstrap.js need jquery1.9 version above, so simply replaced a 2 version, the result of dialog failure not to say, also appeared cannot read Property ' Msie ' of undefined error, so in the online check for a reason, probably upgrade to JQ2 version of th

ReportComplaints.js:Uncaught Typeerror:cannot Read Property ' message ' of undefined

Vonic encountered such a problem, always prompted me undefined, but clearly there is a definitionvar tab={ message:{number :', title:' }} var id= {Template: ' #id ' It was later found that var self = this; Problem, the result is removed and normal, or the tab is removed can be returned to normal, the feeling is that self gets the This is not the same, some self contains tab, some contain tab properties,Here's a quick look at the

Echarts error cannot read property ' features ' of undefined

When we introduced the map,ECHARTS2 Error:Uncaught Error: [Module_miss] "Echarts/src/util/mapdata/params" is not exists!The reason is unclear, but the feeling and the lack of JS file (because ECHARTS3 error is due to lack of world.js)ECHARTS3 Error:Uncaught Typeerror:cannot Read Property ' features ' of undefinedThe reason for this is: missing World.js, then success:The code to complete the above functions

jquery upgrade to the new version of this newspaper error [jquery] cannot read property ' Msie ' of undefined wrong solution (GO)

Recently, a project of jquery upgraded to the latest version, found some pages error cannot read property ' Msie ' of undefined. On the jquery site search, the reason is $.browser this API from the beginning of jQuery1.9 formally abolished, JS code as long as the use of $.browser will report this error. See the official jquery note for details.The landlord by the

Cannot read property ' Store ' of undefined Nodejs Express session

Express app configuration error when using MongoDB! "Cannot read property ' Store ' of undefined"The main reason is the Express version 4++ problemSettings.jsmodule.exports={Cookiesecret: "xxxx",DB: "DBName",Host: "LocalHost",}App.jsvar express = require ("Express");var settings = require ("./settings");To load Connect-mongo error notation:var mongostore=require

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