Suppose, I want to render 3 buttons which are mapped from Array
export const homePage = soruces => {
const array$ = xs.fromArray([1,2,3])
return {
DOM: array$.map(e => {
return <button id={e}>click</button>
})
};
};
but I only get the lastest button which has id of 3
<div id="app">
<button id="3">click</button>
</div>
how do i get all the buttons rendered like this using xstream or rxjs
<div id="app">
<button id="1">click</button>
<button id="2">click</button>
<button id="3">click</button>
</div>
That depends a bit on what you want to achieve. The code you have there basically says: "I get three pieces of data, each at some arbitrary point of time" (because fromArray basically takes the data from the array one by one and puts it into the stream.
If you now what to collect the data over time, you can add fold((buttons, newButton) => buttons.concat(newButton), []).
If however you just happen to have three poeces of data, that always should be three buttons, do not use fromArray but the normal Array.map. You can then use xs.of to emit the three buttons at once (compared to one by one in the first part)
Related
as I'm on my Vue spree (started recently but so far I'm really enjoying learning this framework) couple of questions rised up. One of which is how to post form from multiple components. So before I continue forward I wanted to ask you what are you thinking about this way of structuring and point me in right direction if I'm wrong.
Here it goes.
I'm working on a SPA project using ASP.NET CORE 2.1 and Vue JS Template (with webpack)(https://github.com/MarkPieszak/aspnetcore-Vue-starter) and my project is structured in several containers, something like this:
In my app-root i registered several containers
<template>
<div id="app" class="container">
<app-first-container></app-first-container>
<app-second-container></app-second-container>
<!--<app-third-container></app-third-container>-->
<app-calculate-container></app-calculate-container>
<app-result-container></app-result-container>
</div>
</template>
<script>
// imported templates
import firstContainer from './first-container'
import secondContainer from './second-container'
import calculateContainer from './calculateButton-container'
//import thirdContainer from './third-container'
import resultContainer from './result-container'
export default {
components: {
'app-first-container': firstContainer,
'app-second-container': secondContainer,
// 'app-third-container': thirdContainer,
'app-calculate-container': calculateContainer,
'app-result-container': resultContainer
}
}
</script>
In my first container I'm having several dropdowns and two input fields with my script file where I'm fetching data from API and filling dropdowns and input fields with fetched data.
Something like this ( entered some dummy code for demonstration)
<template>
<div>
<h1>Crops table</h1>
<p>This component demonstrates fetching data from the server. {{dataMessage}}</p>
<div class="form-row">
<div class="form-group col-md-6">
<label for="exampleFormControlSelect1" class="col-form-label-sm font-weight-bold">1. Some text</label>
<select class="form-control" id="exampleFormControlSelect1" v-model="pickedCropType" #change="getCropsByType()">
<option v-for="(cropType, index) in cropTypes" :key="index" :value="cropType.id" :data-imagesrc="cropType.imgPath">{{ cropType.name }}</option>
</select>
</div>
<div class="form-group col-md-6">
<label for="exampleFormControlSelect2" class="col-form-label-sm font-weight-bold">2. Some text</label>
<select class="form-control" id="exampleFormControlSelect2">
<option v-for="(crop, index) in cropSelectList" :key="index" :value="crop.id">{{ crop.name }}</option>
</select>
</div>
</div>
</div>
</template>
<script>
import { mapActions, mapState } from 'vuex'
export default {
data() {
return {
cropTypes: null,
cropSelectList: null,
crops: null,
pickedCropType: null,
}
},
methods: {
loadPage: async function () {
try {
//Get crop types and create a new array with crop types with an added imgPath property
var cropTypesFinal = [];
let responseCropTypes = await this.$http.get(`http://localhost:8006/api/someData`);
responseCropTypes.data.data.forEach(function (element) {
cropTypesFinal.push(tmpType);
});
} catch (err) {
window.alert(err)
console.log(err)
}
},
getCropsByType: async function () {
//Get crops by crop type
let responseCrops = await this.$http.get(`http://localhost:8006/api/crop/Type/${this.pickedCropType}`);
var responseCropsData = responseCrops.data.data;
this.cropSelectList = responseCropsData;
}
},
async created() {
this.loadPage()
}
}
</script>
And in my second container I have different dropdowns and different input fields with different scripts etc.
So, my questions are:
1.) I'm having required data form field in first container and in second container I'm having additional data and my submit button is separated in third container (app-result-container). So, is this proper and logical way of structuring containers if not can you point me in right direction?
2.) Is it smart to input script tag in every container where I'm processing/fetching/submitting some data for that particular container? Should I put scripts tag in separated file and keep structure clean, separating html from js file.
Example:
import { something } from 'something'
export default {
data () {
return {
someData: 'Hello'
}
},
methods: {
consoleLogData: function (event) {
Console.log(this.someData)
}
}
}
3.) Can I send input values from one container to another (In my particular case from first and second container to app-calculate-container(third container))?
How to on submit return results container with calculated imported values
If you want components to communicate or share data with one another, you will need to either emit an event from one component up to the parent and pass it down via props, or use some kind of state management model, like Vuex, where each of your components can listen to the store.
Take a look at this code sandbox: https://codesandbox.io/s/8144oy7xy2
App.vue
<template>
<div id="app">
<child-input #input="updateName" />
<child-output :value="name" />
</div>
</template>
<script>
import ChildInput from "#/components/ChildInput.vue";
import ChildOutput from "#/components/ChildOutput.vue";
export default {
name: "App",
components: {
ChildInput,
ChildOutput
},
data() {
return {
name: ""
};
},
methods: {
updateName(e) {
this.name = e.target.value;
}
}
};
</script>
ChildInput.vue
<template>
<input type="text" #input="changeHandler">
</template>
<script>
export default {
name: "ChildInput",
methods: {
changeHandler(e) {
this.$emit("input", e);
}
}
};
</script>
ChildOutput.vue
<template>
<p>{{ value }}</p>
</template>
<script>
export default {
name: "ChildOutput",
props: {
value: {
type: String,
default: ""
}
}
};
</script>
What's going on?
The ChildInput component is a text field and on every change inside it, fires an event (emits using this.$emit() and passes the whole event up).
When this fires, App is listening to the change, which fires a method that updates the name data property.
Because name is a reactive data property and is being passed down as a prop to the ChildOutput component, the screen re-renders and is updated with the text written.
Neither ChildInput nor ChildOutput knows about one another. It's the parent that listens to the event passed to it, then passes the new prop down.
This way of working is fine and simple to understand, but I would strongly recommend looking at Vuex, as this method can get messy and complicated when you go beyond trivial tasks.
I want to check my angular form validity with a little tweak,
I have a form builded dynamically with directives involved, Now the form has more than one page to it, so i play with ng-hide/ng-show when i move from page to page...
All i want to do is to check the validity of the first chunk of form inputs, for example:
I have 3 pages, 3 questions in every 'page', before the user can go to the next page, it should check for validation on the three inputs, and only than! he can move to the next one...
on my form tag i have 'novalidate' so i must do all the validations myself...
What you're after is ng-form
You can't nest HTML <form></form> tags but you can with ng-form to split your form into sections.
i.e.
<form name="myForm">
<ng-form name="subForm1">
<input name="txtField1" type="text" ng-model="Field1" ng-maxlength="50" required>
</ng-form>
<ng-form name="subForm2">
<input name="txtField2" type="text" ng-model="Field2" ng-maxlength="10" required>
</ng-form>
<button type="button1" ng-disabled="subForm1.$invalid" ng-click="doSomething() ">Button 1</button>
<button type="button1" ng-disabled="subForm2.$invalid" ng-click="doSomething()" >Button 2</button>
<button type="button3" ng-disabled="myForm.$invalid" ng-click="doSomething()" >Button 3</button>
</form>
In this instance button1 and button2 are disabled on parts of the form where as button3 is disabled based on the whole forms input
Source: https://docs.angularjs.org/api/ng/directive/ngForm
You can use the Angular's form element property $dirty, or you could check if the element you want to validate has the class ng-dirty.
If you'd like, read more here, it explains how to use and check this.
Angular JS has some pretty features which you can take advantage of especially the class .ng-valid and .ng-invalid. As the user fills your form, angular dose a real time update on the state of form fields by changing the classList to correspond to the current state of the form.
Any for field that is has been altered and does not pass the Angular validation will have a class .ng-invalid well all classes that passed the validation will have .ng-valid. While ng-pristine indicates that the form have not been modified ng-dirty tells you that the form has been modified. Not that ng-pristine and ng-dirty cannot be used to ascertain the validity of the field.
Meanwhile for your case I have created a CodePen
angular.module("paged", [])
.controller("FormCtrl", function($scope) {
$scope.form = {page: 1};
$scope.canShow = function(i) {
return (i === $scope.form.page);
};
$scope.submit = function(form) {
alert("Form Submitted", form);
};
$scope.gotoPage = function(pageTo) {
var show = false;
var els = document.getElementsByTagName("input"); //Just with input only to keep it simple
for (var i = 0; i < els.length; i++) {
if (els[i].hasAttribute("data-page") && els[i].getAttribute("data-page") == pageTo - 1) {
if (els[i].classList.contains("ng-invalid")) {
show = false;
break;
}
}
show = true;
}
if (show) {
$scope.form.page = pageTo;
if (pageTo == 4) {
$scope.submit($scope.form);
}
}
}
});
to show you how this can done. As someone will rightfully say, there may ways to kill a rat. I think this is one of them
I am trying to build a rating form and want to use the JQuery UI increment slider except I don't want the value to be numbers, I'd like it to say something like "great" or "bad"
I'm great with HTML & CSS not so much with JavaScript or JQuery. I am taking a class in NYC next month to help me become more fluent in these languages. In the mean time any and all help is appreciated. I tried to hack other scripts I have found but keep running into problems. I ran into this script which is close to what I want, except the increments show #s.
I feel as if this code can be easily modified to do what I want.
http://jsfiddle.net/dmcgrew/EquTn/3/
<html>
<div class="kpa_rate kpa_rate1">
<label for="kpa1_rating_value">Parking:</label>
<div id="1" class="slider"></div>
<input type="text" class="kpa1_rating_value" name="kpa1_rating" value="0" />
</div>
<div class="kpa_rate kpa_rate2">
<label for="kpa2_rating_value">Entrance:</label>
<div id="2" class="slider"></div>
<input type="text" class="kpa2_rating_value" name="kpa2_rating" value="0" />
</div>
</html>
JavaScript
<script>
$(function() {
$( ".slider" ).slider({
range: "max",
min: 0,
max: 5,
value: $("input", this).val(),
slide: function( event, ui ) {
//get the id of this slider
var id = $(this).attr("id");
//select the input box that has the same id as the slider within it and set it's value to the current slider value.
$("span[class*=" + id + "]").text(ui.value);
$("input[class*=" + id + "]").val(ui.value);
}
});
});
</script>
Did you want different words ("great, good, neutral, etc") for each value, or just good/bad at the ends?
If you want diff words for each of the 5 values, then like j08691 said, make an array that has the words you want at the indexes you want.
After this, replace the ui.value in .val(ui.value) with the array of value (Arr[ui.value]).
(I'm not sure you actually need the "span" part, but I don't do jquery, so I'm not sure).
$(function() {
var Array = ["die","very bad", "bad", "neutral","good","great"];
$( ".slider" )...etc
...
$("input[class*=" + id + "]").val(Array[ui.value]);
This worked for me.
I did a bit of tinkering, and I think I've found a way to superficially solve your problem. Since the number inputted as the first value doesn't affect the slider button/thing, I'd say just put the first word that the slider should indicate (in my case, "die").
//value does not equal a number here
In the next bit of code, just change input to Array[input], and you should be all set!
min: 0,
max: 5,
value: $("Array[input]"
I hope this works well enough for you.
I need to extract "https://www.somesite.com/Some.Name.123" from the code below.
That code segment is repeated many times, and I need the URLs ..Some.Name.X.
There are other code segments between each of the ones I'm interested in, with very different surrounding html. I don't need the ..Some.Name.x URLs in those other segments.
The following is unique to what URLs I need: "<a class="-cx-PRIVATE-uiImageBlock__image"
<div class="clearfix pvm">
<a class="-cx-PRIVATE-uiImageBlock__image -cx-PRIVATE-uiImageBlock__largeImage lfloat"
aria-hidden="true" tabindex="-1" href="https://www.somesite.com/Some.Name.123">
I don't know how to tag that preceding HTML with iMacros, or how to do that with jQuery as the structure will a bit different each time, but you could to this.
Save the web pages with iMacros. Write a program (c, etc.) to read each of the saved files and write the URLs that follow "cx-PRIVATE-uiImageBlock__image" to a file. Add that list of URLs to an iMacro, or have iMacros read the file, and then process each URL from iMacros.
You need to use some scripting.
My answer makes use of jQuery
var listoflinks = []; //array containing your links
$('a[href*="somesite.com"]').each(function () { // for each link that contains somesite.com in href
var j = $(this).attr('href'); //put the whole href in a variable
listoflinks.push(j); // put all values in an array
});
you'll end up with an array that contains all the href values you're looking for.
If you want to see an example and/or you want to play around with the script you can go here:
http://jsfiddle.net/flish/rESjg/
Edited
Your code is still not clear enough, but hopefully this may help
<a class="sibling a" href="link">sibling a</a><br />
<div class="sibling div"><br />
<a class="child a" href="start-with-link/correct-link">Child a</a><br />
</div><br />
Above is the markup I've used. What this means is that I have considered that you have the following elements:
a // with a sibking div
div // with a child a
a // and all of them have appropriate classes
For this markup you can use the following code (jQuery, of course)
var listoflinks = []; //array containing your links
$('a[class="sibling a"]').siblings('div[class="sibling div"]').children('a[class="child a"]').each(function () {
if ((($(this).attr("href")).substring(0,15))=="start-with-link"){
var i = $(this).attr("href");
listoflinks.push(i);
}
});
View detailed example at http://jsfiddle.net/flish/HMXDk/
Be that as it may, you can add more sibling and children elements in case you have other html entities you forgot to mention
<a class="-cx-PRIVATE-uiImageBlock__image" ------------------ <div class="clearfix pvm"> <a class="-cx-PRIVATE-uiImageBlock__image -cx-PRIVATE-uiImageBlock__largeImage lfloat" aria-hidden="true" tabindex="-1" href="somesite.com/some.name.123">
For example, what means ------------------ in your code above?
I have a method of a class as follows:
add_file: function(name, id, is_new){
// HTML: <div class="icon mime zip">name.zip <a>x</a></div>
var components = name.split('.');
var extension = components[components.length-1];
this.container.innerHTML += "<div id='"+id+"' class='icon mime "+extension+"'>"+name+" <a id='remove-"+id+"' href='#remove'>x</a></div>";
// Add event to a tag
dojo.connect(dojo.byId('remove-'+id), 'onclick', function(ev){
// here i am
});
},
All is working well, until I run this method more than once. The first time the event is registered correctly, and clicking the 'x' will run the "here i am" function. However, once I add more than one node (and yes, the ID is different), the event is registered to the last node, but removed from any previous ones.
In affect I have this:
<div id="field[photos]-filelist">
<div id="file1" class="icon mime jpg">file1.jpg <a id="remove-file1" href="#remove">x</a></div>
<div id="file2" class="icon mime jpg">file2.jpg <a id="remove-file2" href="#remove">x</a></div>
</div>
...and the remove link only works for the last node (remove-file2 in this case).
The problem is you are using the innerHTML +=
That is going to take the existing html, convert it to plain markup, and then completely create new nodes from the markup. In the process, all of the nodes with events get replaced with nodes that look exactly the same but are not connected to anything.
The correct way to do this is to use dojo.place(newNodeOrHTML, refNode, positionString)
var myNewHTML = "<div id='"+id+"' class='icon mime "+extension+"'>"+name+" <a id='remove-"+id+"' href='#remove'>x</a></div>"
//This won't work as is breaks all the connections between nodes and events
this.container.innerHTML += myNewHTML;
//This will work because it uses proper dom manipulation techniques
dojo.place(myNewHTML, this.container, 'last');