Creating an entry form using Angular - javascript

I am in the process of learning AngularJS (version 1) and want to convert a simple word game that I had previously written.
I have a partial HTML which will select a word from a dictionary (JSON file) and display it on screen. The word is saved in $scope as selectedWord. I now want to display an array of empty textboxes for the user to input their guess. The number of boxes to display will obviously be determined by the length of selectedWord and will be different for each game played.
The relevant HTML I need to produce for each letterbox is:
<input name="letters[]" class="answerbox" id="letter_1" onkeyup="testResults(this)" onfocus="this.select();" type="text" size="1" maxlength="1">
with the id incremented by 1 for each new box.

When selectedWord changes, create an array containing as many objects as the length of selectedWord, something as simple as
$scope.guesses =[];
for(var i=0;i<$scope.selectedWord.length;i++){
$scope.guesses.push({
value:''
});
}
Then in your template, use ng-repeat like:
<input type="text" name="letters[]" class="answerbox" ng-repeat="guess in guesses" id="{{'letter_'+$index}}" ng-model="guess.value" ng-keyup="testResults(guess)" ng-focus="this.select();" size="1" maxlength="1">
But if you're using angular properly, I don't you'l need that id unless you want to associate it with a <label>.

ng-repeat
In ng-repeat you can repeat an element and the index is tracked by {{ $index }}. It is zero-based though so you most likely need to add 1.
Split string to array
What you could do is to create an array of characters from your string/word and do an ng-repeat with it.
Track items by $index
It is important that you track the items by $index, so angular js does not complain about dupes.
Here's the code I propose:
<div style="float:left" ng-repeat="chars in selectedWord.split('') track by $index">
<input name="letters[]" class="answerbox" id="letter_{{$index + 1}}" onkeyup="testResults(this)" onfocus="this.select();" type="text" size="1" maxlength="1" >
</div>
I am not sure if it can be done without the surrounding div but if you make it float: left it should not make a difference.

Related

Jquery get values from dynamically generated input texts

Jquery get values from dynamically generated input texts
This is an example of what I am trying to achieve. Let me put the html code and describe afterwards
<div class="col-xs-3 ">
<label for="pointMap[0]-value">firstkey</label>
<input type="text" id="pointMap[0]-value" name="pointsValueMap[firstkey]" value="value1">
</div>
<div class="col-xs-3 ">
<label for="pointMap[1]-value">secondkey</label>
<input type="text" id="pointMap[1]-value" name="pointsValueMap[secondkey]" value="value2">
</div>
I would like to have all the values of however many of these kinds of input type text id (pointMap[i]-value). Please also suggest if there is a better way than having them an array when collected. My mind is blank on what should I be looping against, in a for loop, I am unable to find a terminating condition (size of these input texts).
Since you are using jQuery. You can use the attribute contains selector. There is whole list of such selectors in jQuery.
You can store values of such inputs in an array like this
var inputStore = []; //Where you want to store the values
$("input[name*=pointsValueMap]").each(function(){ //Will check for inputs with name containing pointsValueMap
inputStore.push($(this).val())
});

JS and/or D3 Methods of storing Dynamic User Inputs

My question is similar to the one posed here: storing user input in array
My use case is different in one crucial aspect, I do not have static inputs. At any one time, there could be anywhere from 1 to 3 user number inputs on my page. They are also removed dynamically too, so I can't just create them all, then style them as needed something like using display:hidden;.
My question is: What is a js solution that can store user inputs into an array robust to inputs that may or may not have been appended without an if clause for each array in the event the element hasn't been appended yet(!==null).
Or if d3 has a simpler approach than native javascript to store number inputs into an array, that would be an acceptable answer too. I postulated this selection: d3.selectAll('#input1,#input2,#input3') but I'm not sure if values can be retrieved and stored in an array from such a selection.
Here is a worked-out example:
The document could potentially have 3 inputs, but lets say the current state of the document only has 2 inputs with IDs: #input1 and #input2. So I need to store the values of the existing inputs, and a 0 for #input3 because it has not been created yet. I'm not sure how to create an array comprehension with these requirements. I was thinking something like:
my_array.push(d3.selectAll('#input1,#input2,#input3').each().value())
But like I said above, I want the array to contain the value for each input. push() would just add another item to the array. The array would exceed 3 values if the event listener was triggered more than 3 times, which is not what I want. I just want an array that is updated with the current values of all existing number inputs (and a value of 0 if input has not been appended yet).
Your question is not exactly clear, but it seems to me that you want to get all the values of the inputs, without knowing how many of them you have on the page.
If that's the case, you can simply use...
d3.selectAll("input[type=number]")
..., which will get all the inputs present on the page when you call the function.
Here is a demo, look at the console:
d3.select("button").on("click", function() {
var inputs = [];
d3.selectAll("input[type=number]").each(function() {
inputs.push(this.value);
})
console.log(inputs);
})
<script src="https://d3js.org/d3.v4.min.js"></script>
<div id="form">
<h1><b>Please enter data</b></h1>
<hr size="3" />
<br>
<label for="input 1">Input 1</label>
<input id="input1" type="number">
<br>
<label for="input 2">Input 2</label>
<input id="input2" type="number">
<br>
<label for="input 3">Input 3</label>
<input id="input3" type="text">
<br>
<hr>
</div>
<button>Submit</button>

Angular JS case-insensitive binding?

I have a select menu that displays data from a json file, countries of the world by name.
I have a text field next to it which is bound to it and displays the iso 3166 alpha_2 data (e.g. CH for Switzerland).
Also, the user can enter the 2-character code and the correct name in the menu shows up.
My issue is that the user needs to type the alpha_2 value in uppercase to match. Using my example above, typing "CH" works but "ch" shows no matches in the menu.
Is there a way to get around this?
<td>
<input type="text" size="4" ng-model="country_import.alpha_2">
</td>
<td>
<select ng-model="country_import" ng-options="s.name for s in iso3166 track by s.alpha_2" class="form-control input-xs country-menu"></select>
</td>
Just use .toUpperCase() on the track by variable
<select ng-model="country_import" ng-options="s.name for s in iso3166 track by s.alpha_2.toUpperCase()" class="form-control input-xs country-menu"></select>
Here is plunker for similar case:
https://plnkr.co/edit/pESocfNey55uZb85RgDE?p=preview
I would setup a watch on that, and turn everything a user types into Upper Case.
$scope.$watch('country_import.alpha_2', function() {
$scope.country_import.alpha_2 = $scope.country_import.alpha_2.toUpperCase();
});

Gather a ng-model from several input fields

I am very new to angular and i am trying to display several input boxes and then gather the inputs of the user for each. The number or id of the input boxes depends on a json and its dynamic. I am trying to create the structure in a ng-repeat but it only displays one input box when i define the field ng-model for it.
This is what i have so far.
<td ng-repeat="(key, value) in personType.requirements">
<label for="{{key}}">{{key}}:</label> <input type="text" id="{{key}}" value="{{value}}" ng-model="newReg.{{key}}"></td>
<td><button id='finalizePerson' ng-click="register(newReg)">Register</button></td>
You need to explicitly define the $scope.newReg = {}; to your controller scope.
And to use dynamic ng-model properties, try newReg[key] instead.

Submitting multiple values for one input field

What I'm trying to do:
I'm trying to build a very simple visual layout builder.
The idea is that, the user selects a block, and it has some settings in it, those setting values are stored in the hidden input, and when the user saves the page, i store those values in the database.
Basic block is ok:
For example, user selects a 'text' block, it is added like this:
<div>
<input type="hidden" value="text" name="item_name[]">
<input type="hidden" value="" name="item_title[]">
<input type="hidden" value="sdsd" name="item_text[]">
</div>
Problem:
However, some of the blocks have more than one values for each field. For example, 'gallery' block, which has multiple image urls, image titles etc. I'm facing problem in finding a suitable way to put together the multiple values and submit.
Right now I'm adding them to a string with jQuery, separated with __. I can store the data and separate it, but the problem is that if I want to remove any image from it, it is very difficult because I have just added them in the string, so its hard to find it and remove it.
<div>
text item
<input type="hidden" value="gallery" name="item_name[]">
<input type="hidden" value="__http://img1.jpg__http://img2.jpg" name="img_path[]">
<input type="hidden" value="__img1__img2" name="img_title[]">
<input type="hidden" value="" name="img_desc[]"></input>
</div>
Question:
What would be the suitable way to send multiple values for the above block example, keeping in the mind that there will be multiple blocks having multiple input values?
Thanks.
Build a Javascript Array with all values.
Convert the array to JSON
Submit JSON as the value of the hidden field
On server side, use PHP json_decode function to convert JSON to PHP object or array

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