Collect all value from input html form to object of javascript - javascript

Normally if I add a new input tag I also have to add in Javascript.
I try to collect all value from input tag,
So how to pass value into an object by loop
use tag input name to be object key name also.
Try to use for count
document.getElementById("form1").elements.length
seem it collected the button tag also, how to void it
<form name="form1">
<input type="text" name="value1">
<input type="text" name="value2">
<input type="text" name="value3">
<input type="text" name="value4">
<input type="button" id="save" onClick="fc1()" value="Save">
</form>
for(i=0;......)
{
obj.value+'i' = document.forms["form1"]["value"+ (i+1)].value;
}
Same result as this.
function fc1(){
this.value1 = document.forms["form1"]["value1"].value;
this.value2 = document.forms["form1"]["value2"].value;
this.value3 = document.forms["form1"]["value3"].value;
this.value4 = document.forms["form1"]["value4"].value;
const obj = {
"value1": this.value1,
"value2": this.value2,
"value3": this.value3,
"value4": this.value4
};
}

I usually grab inputs by their ID or class:
<input type="text" id="value1">
then grab the value:
const value1 = document.getElementById('value1').value
to cut down on code, maybe throw it in an array:
const valueArray = [value1, value2, value3]
then you can do something like this:
const allValues = {}
valueArray.forEach((value, index) => {
allValues[`value${index + 1}`] = value
})
now when you log allValues you should have what you want. Note, I am using some es6.

What about this ?
var obj = {};
var form = document.getElementById("form1");
form.children.forEach(function(elm){
if(elm.type === 'text'){
obj[elm.name] = elm.value;
}
});
console.log(obj);

try giving same 'class' or 'name' attribute to the text fields.
try var x = document.getElementsByClassName("example");
which gives you the list of all elements with the class name as "example'. Then you can loop around based on the length of x.
References:
https://www.w3schools.com/jsref/met_document_getelementsbyclassname.asp

try this:
var input = document.forms[0].querySelectorAll('input[type=text]');
var result = Array.from(input).reduce((r, ele) => {
r[ele.name] = ele.value;
return r;
}, {});
console.log(result);
<form name="form1">
<input type="text" name="value1" value=1>
<input type="text" name="value2" value=2>
<input type="text" name="value3" value=3>
<input type="text" name="value4" value=4>
<input type="button" id="save" onclick="fc1()" value="Save">
</form>

If you used something like .. I think it will work. :)
var myObj = {};
var elems = document.getElementsByTagName('input'), i;
for (i in elems) {
myObj[value + i] = myObj[i].value;
}
return from getElementsByTagName is an array of all matching tags. there are some wizard answers in here ha. :)

document.querySelectorAll is made for this.
document.querySelectorAll("form[name='form1'] input[type='text']")
will return all input fields of type text in form1 as HTML nodes.
let elements = document.querySelectorAll("form[name='form1'] input[type='text']");
elements.forEach(e => console.log(e.value));
...logs the values of the input fields. Don't make things harder on yourself by hard coding classes or ID's, and this will allow you to target the input elements you need without additional checks or without fetching every input on the page.
Example:
const values = {};
document.querySelectorAll("form[name='form1'] input[type='text']").forEach(element => values[element.name] = element.value);
console.log(values);
<form name="form1">
<input type="text" name="value1" value=1>
<input type="text" name="value2" value=2>
<input type="text" name="value3" value=3>
<input type="text" name="value4" value=4>
<input type="button" id="save" onclick="fc1()" value="Save">
</form>

This is an alternative solution done with jQuery.
Hope this is what you were looking for. Happy to explain or help in a better solution if needed.
//jQuery solution
const obj = {}
$('#save').click(function(e){
var form = $(this).parent();
var inputs = form.children().not(':input[type=button]');
$.each( inputs, function(){
obj[$(this).attr('name')] = $(this).val();
});
console.log(obj);
})
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<h2>jQuery solution</h2>
<form name="form1">
<input type="text" name="value1">
<input type="text" name="value2">
<input type="text" name="value3">
<input type="text" name="value4">
<input type="button" id="save" value="Save">
</form>
JS Solution
//JS Solution
const objs = {}
var button = document.getElementById('savejs');
var form = document.getElementById('formjs');
var element = {};
button.addEventListener('click', function(){
inputs = form.children;
for(i=0; i < inputs.length; i++){
if(inputs[i].name != ""){
objs[inputs[i].name] = inputs[i].value;
}
}
console.log(objs);
})
<h2>JS solution</h2>
<form name="form1" id='formjs'>
<input type="text" name="value1">
<input type="text" name="value2">
<input type="text" name="value3">
<input type="text" name="value4">
<input type="button" id="savejs" value="Save">
</form>

Related

assigning values to input array

if I have this:
function add(){
var val = document.getElementById("item").value;
document.getElementById("items").value = val;
}
<table>
<input type="text" name="item" id="item" value="" >
<input type="hidden" name="items[]" id="items[]" value="" >
<button onclick="add()" type="button"> Add</button>
</table>
so I just want add some values to input items[], It's possible? in javascript I use push(), but in this case I don't know what to do.
You should create a new items[] element for each value that you're adding. Then the middleware on the server should automatically create an array with all these values.
function add(){
var val = document.getElementById("item").value;
var item = document.createElement("input");
item.type = "hidden";
item.name = "items[]";
item.value = val;
document.getElementById("form").appendChild(item);
}
<form id="form">
<input type="text" name="item" id="item" value="">
<button onclick="add()" type="button"> Add</button>
</form>

How to concatenate form array inputs before submission?

Example code:
<form method="get">
<input type="checkbox" name="anythingOne[]" value='one'> <!-- checked -->
<input type="checkbox" name="anythingOne[]" value='two'>
<input type="checkbox" name="anythingOne[]" value='three'> <!-- checked -->
<input type="checkbox" name="otherThingTwo[]" value='Forty'>
<input type="checkbox" name="otherThingTwo[]" value='Fifty'> <!-- checked -->
</form>
On form submission the URL should look like:
http://some-website.tld/action?anythingOne=one,three&otherThingTwo=Fifty
What I am observing now is,
http://some-website.tld/action?anythingOne=one&anythingOne=three&otherThingTwo=Fifty
The serialize() or serializeArray() is not working in this case. Any ideas?
You could grab the result of .serializeArray and transform it into the desired format:
$(function() {
$('form').on('submit', function(e) {
e.preventDefault();
var data = $(this).serializeArray();
var dataByKey = data
.reduce((result, entry) => {
var name = entry.name.replace(/\[\]$/, '');
(result[name] || (result[name] = [])).push(entry.value);
return result;
}, {});
Object.keys(dataByKey)
.forEach((key, _) => dataByKey[key] = dataByKey[key].join(','));
console.log(dataByKey);
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<form method="get">
<fieldset>
<input type="checkbox" name="anythingOne[]" value='one'>1
<input type="checkbox" name="anythingOne[]" value='two'>2
<input type="checkbox" name="anythingOne[]" value='three'>3
</fieldset>
<fieldset>
<input type="checkbox" name="otherThingTwo[]" value='Forty'>40
<input type="checkbox" name="otherThingTwo[]" value='Fifty'>50
</fieldset>
<input type="submit" />
</form>
If you want, you can also use pure javascript without jQuery to get all the checked checkboxes' value, http://jsfiddle.net/jx76dpkh/1/
<form id="myForm" method="get">
<input type="checkbox" name="anythingOne[]" value='one'>1
<input type="checkbox" name="anythingOne[]" value='two'>2
<input type="checkbox" name="anythingOne[]" value='three'>3
<input type="checkbox" name="otherThingTwo[]" value='Forty'>40
<input type="checkbox" name="otherThingTwo[]" value='Fifty'>50
<input type="submit" />
</form>
JS:
const myForm = document.getElementById('myForm');
myForm.addEventListener('submit', (e) => {
e.preventDefault();
let checkboxes = Array.from(myForm.querySelectorAll('input[type="checkbox"]:checked');// build the array like element list to an array
let anythingOne = checkboxes.filter( box => box.name === 'anythingOne[]').map(item => item.value);
let otherThingTwo = checkboxes.filter( box => box.name === 'otherThingTwo[]').map(item => item.value);
});
In case, you are allowed to change html, here is a solution using hidden fields.
function updateChecks() {
$.each(['anythingOne', 'otherThingTwo'], function(i, field) {
var values = $('input[type=checkbox][data-for=' + field + ']:checked').map(function() {
return this.value;
}).get().join(',');
$('input[type=hidden][name=' + field + ']').val(values);
});
}
$(function() {
$('form').on('submit', function(e) {
updateChecks();
});
updateChecks();
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<form method="get">
<input type="hidden" name="anythingOne" value='' />
<input type="hidden" name="otherThingTwo" value='' />
<input type="checkbox" data-for="anythingOne" value='one' checked='' />
<input type="checkbox" data-for="anythingOne" value='two' />
<input type="checkbox" data-for="anythingOne" value='three' checked='' />
<input type="checkbox" data-for="otherThingTwo" value='Forty' />
<input type="checkbox" data-for="otherThingTwo" value='Fifty' checked='' />
</form>
You could get query string parameters using by serializeArray() method. Then use reduce() to group parameter values by name, and map() to get array of key-value pairs. Then it is possible to concatenate the pairs separated by & using join() method. For example the following snippet creates a target URL using actual value of the form action (current URL by default) and values of checked checkboxes:
$('form').submit(function() {
var queryString = $(this).serializeArray()
.reduce(function(transformed, current) {
var existing = transformed.find(function(param) {
return param.name === current.name;
});
if (existing)
existing.value += (',' + current.value);
else
transformed.push(current);
return transformed;
}, [])
.map(function(param) {
return param.name + '=' + param.value;
})
.join('&');
var action = $(this).prop('action');
var delimiter = (~action.indexOf('?')) ? '&' : '?';
$(this).prop('action', action + delimiter + queryString);
// Only for display result. Remove on real page.
var url = $(this).prop('action');
console.log(url);
return false;
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<form method="GET">
<input type="checkbox" name="anythingOne" value='one'>
<input type="checkbox" name="anythingOne" value='two'>
<input type="checkbox" name="anythingOne" value='three'>
<input type="checkbox" name="otherThingTwo" value='Forty'>
<input type="checkbox" name="otherThingTwo" value='Fifty'>
<button type="submit">Show target URL</button>
</form>
The latest 3 lines are used only to prevent the form sending and display resulted URL.
Also it is possible to solve the question using only serialize() mathod and regular expressions, but it requires lookbehind assertion support in browsers.
You can collect all the checked boxer and join the different parts of the strings.This may not be the most neat or efficient solution, but it works. I used a button to trigger the concatenation. See my comments within the code.
$(document).ready(function(){
$("button").click(function(){
/* concatenate anythingOne form*/
//collect anythingOne input
var joined_serialized = []
var anythingOne = [];
$.each($("input[name='anythingOne[]']:checked"), function(){
anythingOne.push($(this).val());
});
//join otherThingTwo input
var anythingOne_serialized = "";
if(anythingOne.length > 0){ //only collect if checked
anythingOne_serialized = "anythingOne=" + anythingOne.join(",");
joined_serialized.push(anythingOne_serialized)
}
/* concatenate otherThingTwo form*/
//collect otherThingTwo input
var otherThingTwo = []
$.each($("input[name='otherThingTwo[]']:checked"), function(){
otherThingTwo.push($(this).val());
});
//join otherThingTwo input
var otherThingTwo_serialized = "";
if(otherThingTwo.length > 0){ //only collect if checked
otherThingTwo_serialized = "otherThingTwo=" + otherThingTwo.join(",");
joined_serialized.push(otherThingTwo_serialized)
}
/*join different form names*/
var joined_serialized = joined_serialized.join("&")
if(joined_serialized.length == 1){ //remove last & if only one form is checked
joined_serialized = joined_serialized.slice(0, -1)
}
/*concatenated forms with website*/
var result = "http://some-website.tld/action?"+joined_serialized
console.log(result) //E.g. when Two, Three and Forty are checked: http://some-website.tld/action?anythingOne=two,three&otherThingTwo=Forty
})
})
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<form method="get">
<input type="checkbox" name="anythingOne[]" value='one'> <!-- checked -->
<input type="checkbox" name="anythingOne[]" value='two'>
<input type="checkbox" name="anythingOne[]" value='three'> <!-- checked -->
<input type="checkbox" name="otherThingTwo[]" value='Forty'>
<input type="checkbox" name="otherThingTwo[]" value='Fifty'> <!-- checked -->
</form>
<button>submit<button/>

Javascript: How to check if each input value is duplicated to another input value

So i have a dynamic input field came from append with different class name and names, i want to check each of input field value already exist or duplicate.
This would look like
The first criteria_name is default and the others are appendend.
<input type="text" name="criteria_name" class="criteria_name">
<input type="text" name="criteria_name2" class="criteria_name2">
<input type="text" name="criteria_name3" class="criteria_name3">
<input type="text" name="criteria_name4" class="criteria_name4">
<input type="text" name="criteria_name5" class="criteria_name5">
I am trying to check each one of those if there is no duplicated else proceed.
var critname_arr = [];
var input_check;
var crit_name_of_first = $('input.criteriaNames').val();
var acappended = append_crit_header+1;
var count_to = 0;
for(var ab = 2; ab<=acappended; ab++){
var crit_arr;
if(crit_name_of_first == $('input.criteria_each_name'+ab+'').val()){
alert("Criteria cannot be duplicate");
return false;
}else{
input_check = $('input.criteria_each_name'+ab);
input_check.each(function(){
crit_arr = $.trim($(this).val());
});
critname_arr.push(crit_arr);
}
if($('input.criteria_each_name'+ab+'').val() == critname_arr[count_to]){
alert('criteria cannot be duplicate');
return false;
}
count_to++;
}
console.log(critname_arr);
Here is just an example of how you can do it. In the fiddle change one of the values to one that is already in another field (make a duplicate value) to see it do something. If there are no duplicates, it will not do anything. Click the "Button" text to run the duplicate check:
jsFiddle: https://jsfiddle.net/o52gjj0u/
<script>
$(document).ready(function(){
$('.ter').click(function(e) {
var stored = [];
var inputs = $('.criteria_name');
$.each(inputs,function(k,v){
var getVal = $(v).val();
if(stored.indexOf(getVal) != -1)
$(v).fadeOut();
else
stored.push($(v).val());
});
});
});
</script>
<!-- Just use an array name for the input name and same class name as well -->
<div class="ter">Button</div>
<input type="text" name="criteria_name[]" class="criteria_name" value="1" />
<input type="text" name="criteria_name[]" class="criteria_name" value="2" />
<input type="text" name="criteria_name[]" class="criteria_name" value="3" />
<input type="text" name="criteria_name[]" class="criteria_name" value="4" />
<input type="text" name="criteria_name[]" class="criteria_name" value="5" />

How to get the name and value of inputs in key value pair

I want to store the name and value of input elements in database on button click. So i want to get the name as key and value as value.
<form id="form">
<input type="text" name="fname" value="a">
<input type="text" name="lname" value="b">
<input type="button" value="submit">
</form>
i am using this jquery code on button click to get the value.
$('#form input').each(function(key, value) {
alert(this.value);
});
Please help to get the name and value as key value pair (json format).
Try this:
var obj = {};
$('#new_user_form input, #new_user_form select').each(function(key, value) {
obj[this.name] = this.value;
});
If you want individual JSON strings of each input use JSON.sringify() and object literals.
$('input[type="text"]').each(function () {
var obj = {};
obj[$(this).attr('name')] = $(this).val();
alert(JSON.stringify(obj));
});
<form>
<input type="text" name="fname" value="a">
<input type="text" name="lname" value="b">
</form>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
Alternatively, create an array of object literals.
DEMO
var inputs = [];
$('input[type="text"]').each(function () {
var obj = {};
obj[$(this).attr('name')] = $(this).val();
inputs.push(obj);
});
console.log(JSON.stringify(inputs));
$('#form').submit(function(e) {
e.preventDefault(); // prevent form from submission.
var $form = $(this);
var url = $form.attr("action");
console.log(url);
var data = $form.serializeArray(); // check out this console log everything is in key-value pair.
console.log(data);
var $divDisplay = $("#key-value-display");
$divDisplay.html(data);
$.ajax({
url: url,
data: data,
}).done(function(response) {
//work with response here.
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<form id="form" action="url.php or asp.net whereever you are processing" method="post">
<input type="text" name="fname" value="a">
<input type="text" name="lname" value="b">
<input type="submit" value="submit">
</form>
<div id="key-value-display"></div>

How to make array of values of objects

<input name="hello">value1
<input name="hello">value2
<input name="hello">value3
<input name="hello">value4
var a = getElementsByName('hello')
Now, how do I create an array that contains (value1,value2,value3,value4)?
I thought of using makeArray, but it returns just the objects not the values.
You can iterate over them, or use map.
var items = Array.prototype.map.call(a, function(el){
return el.nextSibling.textContent;
});
demo
var items = [];
for (var i=0; i<a.length; i++) {
items.push(a[i].nextSibling.textContent);
}
demo
First of all your html should look like that:
<input name="hello1" value="value1" type="text" />
<input name="hello2" value="value2" type="text" />
<input name="hello3" value="value3" type="text" />
<input name="hello4" value="value4" type="text" />
I.e. if you are using text boxes your name attribute should be different. Otherwise you can't get the values. And of course the values are actually attributes. Here is a pure javascript code which could do what you want:
var inputs = document.querySelectorAll("input[type='text']");
var result = [];
for(var i=0; field=inputs[i]; i++) {
result.push(field.value);
}
alert(result);
And here is a jsfiddle demonstrating the example http://jsfiddle.net/krasimir/nbmjG/
You should do this like:
HTML:
<input type="text" id="hello1" value="value1">
<input type="text" id="hello2" value="value2">
<input type="text" id="hello3" value="value3">
<input type="text" id="hello4" value="value4">
JS:
alert('ready?');
var n = 4;
var arr = new Array(n);
for(var i = 0; i < n; i++) {
arr[i] = document.getElementById('hello' + (i+1)).value;
}
alert(arr);
DEMO
Your inputs have to be like so: Demo
<input name="hello" value="value1">
<input name="hello" value="value2">
<input name="hello" value="value3">
<input name="hello" value="value4">
Then following will return array of values:
var arr = Array.prototype.map.call(document.getElementsByName('hello'), function(elem){
return elem.value;
});
You need to use []
<input name="hello[]">value1</input>
<input name="hello[]">value2</input>
<input name="hello[]">value3</input>
<input name="hello[]">value4</input>

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