Develop Reference

JavaScript creating array with input name and values

I was formulating this question:
Is it possible to make an array automatically from the .name and .value data used in all the inputs type text?
This is the reference doing manually:
var foo = [];
foo['bar'] = 'foo data';
foo['foo'] = 'bar data';
I got this idea... And it works...
var foo[];
for (var i = 0; i < document.getElementsByTagName('input').length; i++)
{
foo[document.getElementsByTagName("input")[i].name] = document.getElementsByTagName("input")[i].value;
};
The mission was to make it work automatically.
Get the .name of the input and get the .value of that input.
I was editing the question to post it here... When I figured out how to make it. I decided to leave here the reference, it'll be useful for someone, I guess.
Feedback is welcome.

Your code is reasonable enough, except for two things:
Use an object instead of an array.
Create the list of inputs only once.
So you could do:
var values = {};
var inputs = document.getElementsByTagName('input');
for( var i = 0; i < inputs.length; i++ ) {
values[inputs[i].name] = inputs[i].value;
}

javascript getelement where value contains specific string

I was wanting to count the occurrences of input fields that has a class name of text where that text input contains a specific value.
document.getElementById('c_files').getElementsByClassName('text').length;
So far this counts all textboxes with the class name of text but how can i make it value specific, say if i have 50 textboxes but i only want to count the ones where the value of that textbox contains abc somewhere within the string.
Thanks.
Edit: Thank you everyone for your time and answers, i have voted you all up, but i prefer John Bupit's solution out of them all so thats the one i will accept. Thanks again.

You can iterate over the elements and see which ones have the desired value:
var elems = document.getElementById('c_files').getElementsByClassName('text');
var count = 0;
for(var i = 0; i < elems.length; i++) {
if(elems[i].value.match(/abc/)) count++;
}

You can select all textboxes first and after that filter those matching your criteria. For example, by using Array.prototype.filter method:
var allText = document.getElementById('c_files').getElementsByClassName('text'),
filtered = [].filter.call(allText, function(textbox) {
return textbox.value.indexOf('abc') > -1;
});
Above code will produce and array of text elements where value contains substring "abc".

Hi I think you need to review this SO post-
https://stackoverflow.com/a/9558906/3748701
https://stackoverflow.com/a/10095064/3748701
This is something which would help in getting your solution.

You'll need to loop over all of the text boxes with the specified class and calculate it from there.
Something like the following logic should work:
var counter = 0;
var inputElements = document.getElementById('c_files').getElementsByClassName('text').length;
for (var i = 0; i < inputElements.length; i++) {
if (inputElements.value == "someText") {
counter++;
}
}

Javascript: How to re-arrange content display of text field?

I have a text field (not a date field) who contain simply a value such "2013-08-27" and my goal would be to reverse the order and get "27-08-2013". So is matter to re-arrange the content but I don't have enough javascript knowledge. I tried using some "date" variable but without success much probably because my field is not a date field.
The html related to the field look like this:
<input type="text" value="2013-08-27" name="my_field" id="my-field" readonly="">
If you can give me an example of code based of this:
var my_field = document.getElementById('my_field');
thank
PS: I precise I don't have access to html of this field because is located to a remote server. I can only interact by adding code in a JS file planned for that. The field have also a "readonly" property because is not planned for be modified.

This code should do the trick:
var revert = function(str) {
var parts = str.split("-");
var newArr = [];
for(var i=parts.length-1; p=parts[i]; i--) {
newArr.push(p);
}
return newArr.join("-");
}
var replaceValueInInputField = function(id) {
var field = document.getElementById(id);
field.value = revert(field.value);
}
var replaceValueInDomNode = function(id) {
var el = document.getElementById(id);
var value = el.innerHTML, newValue = '';
var matches = value.match(/(\d{4})-(\d{2})\-(\d{2})/g);
for(var i=0; m=matches[i]; i++) {
value = value.replace(m, revert(m));
}
el.innerHTML = value;
}
replaceValueInInputField("my-field");
replaceValueInDomNode("my-field2");
jsfiddle http://jsfiddle.net/qtDjF/2/

split('-') will return an array of number strings
reverse() will order array backwards
join("-") will join array back with '-' symbol
var my_field_value = document.getElementById('my_field').value;
my_field_value.split('-').reverse().join("-");

You can use the split function.
var my_field = document.getElementById('my_field').split("-");
the var my_field will be an array of string like : "YYYY,mm,dd"
and then you can re-arrange it in the order you want.

Try this
var date = document.getElementById("my-field").value;
//alert(date);
var sp = date.split("-");
alert(sp[2]+"-"+sp[1]+"-"+sp[0]);

With Jquery
var parts =$('#my-field').val().split("-");
$('#my-field').val(parts[2]+"-"+parts[1]+"-"+parts[0]);

Simple regex:
var res;
test.replace(/(\d\d\d\d)-(\d\d)-(\d\d)/,function(all,a,b,c){res=c+"-"+b+"-"+a;});
JSFiddle: http://jsfiddle.net/dzdA7/8/

You could try splitting the string into array and inverting it's items in a loop:
var my_field = document.getElementById('my_field').value.split("-"),
length = my_field.length,
date = [];
for(i = length - 1; i >= 0; i--){
date.push(my_field[i]);
}
console.log(date.toString().replace(/,/g,"-"));

Javascript - Get Array of Inputs From Form

I'm trying to make a universal "Check Empty" javascript function. What I figured I would do was onsubmit get the number of input boxes in the form and take it's length like so:
I did pass the form name into the function via this.name and called it formVar
var len = formVar.input[].value;
Then I would use that variable as a limit to a loop so I could check each one and see if it was empty. What's the problem with the above code snippet? Is there a way to get a number of inputs in a form?

DEMO
input[] isn't a valid identifier in JavaScript, so you'll need to access these inputs as a string index on your form:
var allInputs = formVar["input[]"];
var len = allInputs.length;
var anyChecked = false;
for (var i = 0; i < len; i++)
if (allInputs[i].checked){
anyChecked = true;
break;
}
if (!anyChecked)
alert("all checkboxes are empty!");

You can use the following to figure out the number of input elements in your form:
document.forms['search'].getElementsByTagName('input').length
this assumes you have a form named search. or you can use your formVar to replace dcoument.forms['search'] part

get id of checked checkbox in gridview in javascript

I am having checkbox in each itemTemplate of asp:gridview
I want to get ids or values of those many selected checkboxes using only javascript

In pure javascript I'm not sure about platform portability: you'd REALLY want jQuery or some other helper library here.
With jQuery:
var values = [];
var ids = [];
jQuery.each(jQuery("input:checkbox").find(":checked"), function(){
values.push(jQuery(this).val());
ids.push(jQuery(this).attr("id");
});
will give you the ids and values of all the checked checkboxes.
EDIT: ugly, but this might work...
var values = [];
var ids = [];
var inputs = document.getElementsByTagName("input");
var i;
for(i=0;i<inputs.length;i++){
if(inputs[i].hasAttributes() && inputs.getAttribute('type') == "checkbox" && inputs.getAttribute('checked')){
values.push(inputs[i].getAttribute('value'));
ids.push(inputs[i].getAttribute('id'));
}
}
Let me know if that does what you want.

I am not exactly sure on what you are trying to do but this might help you out. This will get all of the inputs on the screen and process only the checked ones.
var inputList = document.getElementsByTagName("input");
var resultsArray = [];
for(var i = 0; i < inputList.length; i++) {
if (inputList[i].getAttribute("checked") == true) {
resultsArray.push(inputList[i]);
}
}
Sorry, forgot to tell you that this would be a list of elements. You will then need to extract them however you want to from resultsArray.