javascript - Getting a content script to append image on page load -

-

i've start out learning how make extensions google chrome. have basic understanding far, wanted try small.

right trying image append specific div on specific page everytime page loads. extension loads but, javascript code never seems run , image never gets loaded.

this manifest.json file have far:

{     "manifest_version": 2,     "name": "icon creator",     "description": "creates custom icon page",     "version": "1.0",      "content_scripts": [     {         "matches": ["file:///home/tijko/documents/learning/javascript/test_page.html"],         "css": ["sample.css"],         "js":["trial.js"]     }     ],     "icons": {"icon": "icon.jpg"},     "web_accessible_resources":["trial.js"] }

and javascript:

var test = function() {     custom_icon = document.createelement("img");     target = document.getelementbyid("location");     custom_icon.src = "icon.png";     target.appendchild(custom_icon); } test()

are trying load own extension's icon.png? right trying load icon.png on domain , path of local page. instead, should do:

custom_icon.src = chrome.extension.geturl("icon.png");

to refer extension's icon.png.

also, must list icon.png in web_accessible_resources. furthermore, don't need list trial.js in web_accessible_resources (except very specialized use cases).

finally, need approve extension access file:// pages checking appropriate box under extension's listing in chrome://extensions.


Comments

Post a Comment

Popular posts from this blog

java - Jmockit String final length method mocking Issue -

-
using jmockit 1.2 jar, trying mock string's length method getting unexpected invocation exception: failed: test java.lang.illegalstateexception: missing invocation mocked type @ point; please make sure such invocations appear after declaration of suitable mock field or parameter @ stringdemo.testa$1.<init>(testa.java:17) @ stringdemo.testa.test(testa.java:13) i using testng: @test public void test() throws exception { new expectations() { @mocked("length") string astring; { astring.length(); result = 2; } }; system.out.println(a.showa("test")); } } actual class a: public class { public static int showa(string str){ int a= str.length(); return a; } } this wrong way of recording expected results. shouldn't mock , record string's length() method, record showa() instead. here solution @suppresswarnings("unused...
Read more

What is the difference between data design and data model(ERD) -

-
i have google question , find answer in day. know, data design many many table have list column,and mark pk , fk. why er-diagram have find this? data design process of designing database. main output of data design detailed logical data model of database. some people data design includes of needed logical , physical design choices , physical storage parameters needed generate design in data definition language. technically, database analysis, database analysts (dbas) trained do. while person can both data design , database analysis, these 2 different tasks. data design models data. database analysis takes model , applies 1 or more database engines (relational, hierarchical, nosql). a logical data model 1 of main outputs of data design. data model represented entity relationship diagram, or er diagram.
Read more

ios - Can NSManagedObject conform to NSCoding -

-
i need transfer single object across device. right converting nsmanagedobject dictionary , archiving , sending nsdata. upon receiving unarchiving it. transfer nsmanagedobject archiving , unarchiving instead of creating intermediate data object. @interface test : nsmanagedobject<nscoding> @property (nonatomic, retain) nsstring * title; @end @implementation test @dynamic title; - (id)initwithcoder:(nscoder *)coder { self = [super init]; if (self) { self.title = [coder decodeobjectforkey:@"title"]; //<crash } return self; } - (void)encodewithcoder:(nscoder *)coder { [coder encodeobject:self.title forkey:@"title"]; } @end nsdata *archivedobjects = [nskeyedarchiver archiveddatawithrootobject:testobj]; nsdata *objectsdata = archivedobjects; if ([objectsdata length] > 0) { nsarray *objects = [nskeyedunarchiver unarchiveobjectwithdata:objectsdata]; } the problem above code is. crashes @ self.title in initwithcoder sa...
Read more