The below code is generating errors:
Initialize:
var firstC = ["AUD","ZAR"];
var secondC= ["AUD","BRL","CAD","USD"];
function colorG(item, col, row){
var currency = firstC[col] + "-"+ secondC[row];
if(verifyCurrency(currency)==true)
item.getStyle().backgroundColor="green";
}
function verifyCurrency(currency)
{
if(this.getRowData().getExpressionValue("row[digital]").indexOf(currency)!=-1)
return true;
else return false;
}
cell:
colorG(this,1,0);
In which phase do I have to place verifyCurrency so that it will work?
Your assumption about "this" in your verifyCurrency function is wrong. I don't know Javascript good enough to tell you more about this, but I think that "this" is always defined inside a function. But it is not pointing to your item instance!
To fix this (no pun intended), pass the item as an argument to your verifyColor function.
Related
Is it possible to convert my jquery element to protractor element? For example:
browser.executeScript(() => {
var ele = $(".datatable-row-wrapper .hdt-d:not('not-active')").get(0);
return ele;
}).then(ele => {
**//// this throwing error**
element(ele).click();
});
One option would be to instantiate an ElementFinder instance (not tested):
var elementLib = require('protractor/built/element');
var ElementFinder = elementLib.ElementFinder;
var elementFinder = ElementFinder.fromWebElement_(browser, ele, by.css(".datatable-row-wrapper .hdt-d:not('not-active')"));
elementFinder.click();
Even though I've never encountered the need to actually do so.
The other way around - passing an ElementFinder into a script is much easier:
var elm = $(".datatable-row-wrapper .hdt-d:not('not-active')");
browser.executeScript("arguments[0].click();", elm.getWebElement());
The below is my page object code
this.getRowBasedOnName = function (name) {
return this.tableRows.filter(function (elem, index) {
return elem.element(by.className('ng-binding')).getText().then(function (text) {
return text.toUpperCase().substring(0, 1) === name.toUpperCase().substring(0, 1);
});
});
};
the above function is called in the same page object in another function, which is
this.clickAllProductInProgramTypeBasedOnName = function (name) {
this.getRowBasedOnName(name).then(function (requiredRow) {
requiredRow.all(by.tagName('label')).get(1).click();
});
};
but the above code throws an error in the console as requiredRow.all is not a function
but when i do the following :
this.clickAllProductInProgramTypeBasedOnName = function (name) {
var row = this.getRowBasedOnName(name)
row.all(by.tagName('label')).get(1).click();
};
this works fine and clicks the required element.
But this.getRowBasedOnName() function returns a promise, which should and can be used after resolving it uisng then function. How come it is able to work by just assigning it to a variable?
When you resolve the result of getRowBasedOnName(), which is an ElementArrayFinder, you get a regular array of elements which does not have an all() method.
You don't need to resolve the result of getRowBasedOnName() at all - let it be an ElementArrayFinder which you can chain with all() as in your second sample:
var row = this.getRowBasedOnName(name);
row.all(by.tagName('label')).get(1).click();
In other words, requiredRow is not an ElementArrayFinder, but row is.
I've looked up similar questions and responses and still have not been able to get this to work.
LessonRightButton.js
//#pragma strict
public var audio1 : AudioPlayback;
function OnClick(){
var findAudioSource = GameObject.Find("AudioPlaybackButton");
var audio1:AudioPlayback = findAudioSource.GetComponent(AudioPlayback);
audio1.woo(); // THIS IS LINE 50 IN THE ERROR
}
AudioPlayback.js
//#pragma strict
function woo(){
Debug.Log("wooooooooooooooo");
}
I get this error:
NullReferenceException: Object reference not set to an instance of an
object LessonRightButton.OnClick () (at
Assets/Scripts/LessonRightButton.js:50)
I'm trying to call the woo function from a different script.
These scripts are shortened for the purpose of ease of reading. Please advise.
you have no AudioPlayback attached on that AudioPlaybackButton object.
Either add one manually or by code:
function OnClick(){
var findAudioSource = GameObject.Find("AudioPlaybackButton");
var audio1:AudioPlayback = findAudioSource.GetComponent(AudioPlayback);
if(audio1 == null){
audio1 = findAudioSource.AddComponent(AudioPlayback);
}
audio1.woo();
}
Most of the times all I have to do with JavaScript is just add some dynamics to simple HTML. Recently, however, after discovering CoffeeScript, I got interested in *Object Oriented JavaScript". Here is some code in CoffeeScript.
class MyClass
constructor: (title, purpose)->
#title = typeof title is undefined ? "My Class" : title
#purpose = typeof purpose is undefined ? "None" : purpose
#myMethod()
myMethod: ->
_getTitle = #getTitle
_getPurpose = #getPurpose
$(window).click ->
_getTitle()
_getPurpose()
return
return
getTitle: ->
_title = #title
window.console.log "Title of the class this object belongs to is: #{_title}"
return
getPurpose: ->
_purpose = #purpose
window.console.log "Purpose of creating this class is: #{_purpose}"
return
title = ""
purpose = ""
myObject = new MyClass("Testbed", "to test Object Oriented JavaScript")
For those who prefer JavaScript, here is the compiled (?) JavaScript.
var MyClass, myObject;
MyClass = (function() {
var purpose, title;
function MyClass(title, purpose) {
var _ref, _ref1;
this.title = (_ref = typeof title === void 0) != null ? _ref : {
"My Class": title
};
this.purpose = (_ref1 = typeof purpose === void 0) != null ? _ref1 : {
"None": purpose
};
this.myMethod();
}
MyClass.prototype.myMethod = function() {
var _getPurpose, _getTitle;
_getTitle = this.getTitle;
_getPurpose = this.getPurpose;
$(window).click(function() {
_getTitle();
_getPurpose();
});
};
MyClass.prototype.getTitle = function() {
var _title;
_title = this.title;
window.console.log("Title of the class this object belongs to is: " + _title);
};
MyClass.prototype.getPurpose = function() {
var _purpose;
_purpose = this.purpose;
window.console.log("Purpose of creating this class is: " + _purpose);
};
title = "";
purpose = "";
return MyClass;
})();
myObject = new MyClass("Testbed", "to test Object Oriented JavaScript");
Sorry about the long code. I had to try to keep it interesting. The thing is, this code outputs:
Title of the class this object belongs to is: undefined
Purpose of creating this class is: undefined
whereas I was expecting it to output:
Title of the class this object belongs to is: Testbed
Purpose of creating this class is: to test Object Oriented JavaScript
And I could've sworn this was how it worked when I last tinkered with it (around six months ago). I learnt that in a method that is part of the prototype of an object, this refers to the prototype itself. And this.something would actually point to object.something. Whereas in this example, inside myObject.myMethod(), this behaves as it should and this.getTitle() refers to myObject.getTitle(). Inside myObject.getTitle(), however, this refers to window. Why?
Is it because getTitle() was called inside a $(window).click() handler? But why would that change the context? getTitle() is still a property of myObject.
Also, you see what I am trying to accomplish here. How could I accomplish that?
There are several problems.
1) You never return anything from .getPurpose or .getTitle
2) You should create a reference to this in myMethod. i.e. var me = this and then inside the event listener call me.getTitle() and me.getPurpose(). This is needed because inside the event listener (window onclick), this refers to the window and not the object.
3) It looks like your ternary expressions are always evaluating to false. You need to rethink them.
P.S. I looked at the straight JS version
Answer:
It turns out I had neglected to use the new keyword when creating the class instance. The code in the question itself is fine.
Question:
I have a fairly simple class where the constructor calls another method on the class (editor_for_node). The call happens inside a jQuery each() loop, but I've also tried moving it outside.
define ['jquery'], ($) ->
class Editor
constructor: (#node, #data, #template) ->
#node.widgets().each (i, elem) =>
data = if #data then #data[i] else null
node = $(elem)
#editor_for_node node, data
editor_for_node: (node, data) ->
console.log 'hello!'
return {
'Editor': Editor,
}
When the line #editor_for_node node, data gets called, I get an error (in Firebug) saying this.editor_for_node is not a function.
I really can't see why this isn't working properly, the only possible source of weirdness that I can see is my use of require.js's define function at the start.
Edit: Generated output
(function() {
define(['jquery'], function($) {
var Editor;
Editor = (function() {
Editor.name = 'Editor';
function Editor(node, data, template) {
var _this = this;
this.node = node;
this.data = data;
this.template = template;
this.node.widgets().each(function(i, elem) {
data = _this.data ? _this.data[i] : null;
node = $(elem);
return _this.editor_for_node(node, data);
});
}
Editor.prototype.editor_for_node = function(node, data) {
return console.log('hello!');
};
return Editor;
})();
return {
'Editor': Editor
};
});
}).call(this);
First: Which version of CoffeeScript are you using? The fat arrow has been a source of bugs in certain previous releases.
If you're using the latest (1.3.1), then I'm going to go ahead and say that this is an indentation issue. When I copy and paste your code, it works fine. Are you mixing tabs and spaces? Verify that the compiled output contains the line
Editor.prototype.editor_for_node = ...
Update: See the comments on this answer. Turns out the problem was that the new keyword wasn't being used when invoking the constructor.