I am trying to come up with a simple jquery input watermark function. Basically, if the input field has no value, display it's title.
I have come up with the jquery necessary to assign the input's value as it's title, but it does not display on the page as if it was a value that was hand-coded into the form.
How can I get this to display the value when the page loads in the input field for the user to see?
Here's the fiddle: http://jsfiddle.net/mQ3sX/2/
$(document).ready(function() {
$(".wmk").each(function(){
var value = $(this).val();
var title = $(this).attr("title");
if (value == '') {
value = title;
}
$(".result").text(value);
// You can see I can get something else to display the value, but it does
// not display in the actual input field.
});
});
Instead of writing your own, have you considered using a ready-bake version? It's not exactly what you asked for, but these have additional functionality you might like (for instance, behaving like a normal placeholder that auto-hides the placeholder when you start typing).
http://www.hagenburger.net/BLOG/HTML5-Input-Placeholder-Fix-With-jQuery.html
http://archive.plugins.jquery.com/project/input-placeholder
Use the below line of code. You need to specify the input element, and update its value. Since your input field has a class called '.wmk', I am using the below code. You can use "id" and use "#" instead of ".". Read more about selectors at http://api.jquery.com/category/selectors/
$(".wmk").val(value);
Updated jsfiddle http://jsfiddle.net/bhatlx/mQ3sX/9/
Update: since you are using 'each' on '.wmk', you can use
$(this).val(value)
I think what you want is this:
$(document).ready(function() {
$(".wmk").each(function(){
var value = $(this).val();
var title = $(this).attr("title");
if (value == '') {
$(this).val(title);
}
$(".result").text(value);
});
});
May be you want something like below,
DEMO
$(document).ready(function() {
$(".wmk").each (function () {
if (this.value == '') this.value = this.title;
});
$(".wmk").focus(
function () {
if (this.value == this.title) this.value = '';
}
).blur(
function () {
if (this.value == '') this.value = this.title;
}
);
}); // end doc ready
Related
Place holder is not working in IE-9,so I used the below code for place holder.
jQuery(function () {
debugger;
jQuery.support.placeholder = false;
test = document.createElement('input');
if ('placeholder' in test) jQuery.support.placeholder = true;
});
// This adds placeholder support to browsers that wouldn't otherwise support it.
$(function () {
if (!$.support.placeholder) {
var active = document.activeElement;
$(':text').focus(function () {
if ($(this).attr('placeholder') != '' && $(this).val() == $(this).attr('placeholder')) {
$(this).val('').removeClass('hasPlaceholder');
}
}).blur(function () {
if ($(this).attr('placeholder') != '' && ($(this).val() == '' || $(this).val() == $(this).attr('placeholder'))) {
$(this).val($(this).attr('placeholder')).addClass('hasPlaceholder');
}
});
$(':text').blur();
$(active).focus();
$('form:eq(0)').submit(function () {
$(':text.hasPlaceholder').val('');
});
}
});
When I am taking the value of test,it shows null.How can I get the details of all input tag?
I think this will help you
if ($.browser.msie) {
$("input").each(function () {
if (IsNull($(this).val()) && $(this).attr("placeholder") != "") {
$(this).val($(this).attr("placeholder")).addClass('hasPlaceHolder');
$(this).keypress(function () {
if ($(this).hasClass('hasPlaceHolder')) $(this).val("").removeClass('hasPlaceHolder');
});
$(this).blur(function () {
if ($(this).val() == "") $(this).val($(this).attr("placeholder")).addClass('hasPlaceHolder');
});
}
});
}
I'm on my mobile so this is hard but really you need to do
JQuery.support.placeholder = typeof 'placeholder' in test !== 'undefined'
Because null means there isn't any placeholder value, but there is placeholder support
From what I understand you're saying that the placeholder in test is returning null
I suggest you don't write this yourself and go for an off-the-shelf solution. There's more complexity here that you'd probably want to tackle yourself if all you want is provide support for older browsers.
For example, here's the shim I'm using (and that is recommended on http://html5please.com): https://github.com/mathiasbynens/jquery-placeholder/blob/master/jquery.placeholder.js
Go ahead and read the code. These are some issues you need to have in mind when writing such shim:
detect the browser support,
keep track when the box contains the real input or not;
add a class to allow different text colour for the placeholder,
clear the placeholders before submitting the form,
clear the placeholders when reloading the page,
handle textarea,
handle input[type=password]
And that's probably not even all. (The library I've linked also hooks into jQuery in order to make .val() return '' when there's no real input in the box.
There's also another shim that uses a totally different approach: https://github.com/parndt/jquery-html5-placeholder-shim/blob/master/jquery.html5-placeholder-shim.js
This library doesn't touch the actual value of the input, but instead displays an element directly over it.
HTML:
<input type='text' id='your_field' value='Enter value'/>
jQuery:
$(document).ready(function(){
$("#your_field").on('focusout',function(){
if($("#your_field").val() == ''){
$("#your_field").val('Enter value');
}
});
$("#your_field").on('focus',function(){
if($("#your_field").val() == 'Enter value'){
$("#your_field").val('');
}
});
});
See DEMO
Also check when the form is posted because if the user submits the form without entering the field then Enter value will be posted as the value of the field.So do either validations in client side or check in the server side when submitting the form.
I'm can't figure out a way of displaying a message if a specific word is inputed into an input box. I'm basically trying to get javascript to display a message if a date, such as '01/07/2013', is inputed into the input box.
Here is my html
<p>Arrival Date</p> <input type="text" id="datepicker" id="food" name="arrival_date" >
I'm using a query data picker to select the date.
You can insert code in attribute onchange
onchange="if(this.value == 'someValue') alert('...');"
Or create new function
function change(element){
if(element.value == 'someValue'){
alert('...');
}
}
And add attribute
onchange="change(this);"
Or add event
var el = document.getElementById('input-id');
el.onchange = function(){
change(el); // if 'el' doesn't work, use 'this' instead
}
I'm not sure if it works, but it should :)
Use .val() to get the value of the input and compare it with a string
var str = $('#datapicker').val(), // jQuery
// str = document.getDocumentByI('datapicker').value ( vanilla js)
strToCompare = '01/07/2013';
if( str === strToCompare) {
// do something
}
And encase this in either change or any keyup event to invoke it..
$('#datepicker').change(function() {
// code goes here
});
Update
Try the code below.
$(function () {
var $datepicker = $('#datepicker');
$datepicker.datepicker();
$datepicker.on('change', function () {
var str = $datepicker.val(),
strToCompare = '07/19/2013';
if (str === strToCompare) {
console.log('Strings match')
}
else {
console.log('boom !!')
}
});
});
Check Fiddle
Your input has 2 ids. You need to remove id="food". Then the following should work with IE >= 9:
document.getElementById('datepicker').addEventListener(
'input',
function(event) {
if (event.target.value.match(/^\d+\/\d+\/\d+$/))
console.log("Hello");
}, false);
I have the following structure:
<div id="campaignTags">
<div class="tags">Tag 1</div>
<div class="tags">Tag 2</div>
<div class="tags">Tag 3</div>
</div>
And I'm trying to match user input against the innerText of each children of #campaignTags
This is my latest attempt to match the nodes with user input jQuery code:
var value = "Tag 1";
$('#campaignTags').children().each(function(){
var $this = $(this);
if(value == $(this).context.innerText){
return;
}
The variable value is for demonstration purposes only.
A little bit more of context:
Each div.tags is added dynamically to div#campaignTags but I want to avoid duplicate values. In other words, if a user attempts to insert "Tag 1" once again, the function will exit.
Any help pointing to the right direction will be greatly appreciated!
EDIT
Here's a fiddle that I just created:
http://jsfiddle.net/TBzKf/2/
The lines related to this question are 153 - 155
I tried all the solutions, but the tag is still inserted, I guess it is because the return statement is just returning the latest function and the wrapper function.
Is there any way to work around this?
How about this:
var $taggedChild = $('#campaignTags').children().filter(function() {
return $(this).text() === value;
});
Here's a little demo, illustrating this approach in action:
But perhaps I'd use here an alternative approach, storing the tags within JS itself, and updating this hash when necessary. Something like this:
var $container = $('#campaignTags'),
$template = $('<div class="tags">'),
tagsUsed = {};
$.each($container.children(), function(_, el) {
tagsUsed[el.innerText || el.textContent] = true;
});
$('#tag').keyup(function(e) {
if (e.which === 13) {
var tag = $.trim(this.value);
if (! tagsUsed[tag]) {
$template.clone().text(tag).appendTo($container);
tagsUsed[tag] = true;
}
}
});
I used $.trim here for preprocessing the value, to prevent adding such tags as 'Tag 3 ', ' Tag 3' etc. With direct comparison ( === ) they would pass.
Demo.
I'd suggest:
$('#addTag').keyup(function (e) {
if (e.which === 13) {
var v = this.value,
exists = $('#campaignTags').children().filter(function () {
return $(this).text() === v;
}).length;
if (!exists) {
$('<div />', {
'class': 'tags',
'text': v
}).appendTo('#campaignTags');
}
}
});
JS Fiddle demo.
This is based on a number of assumptions, obviously:
You want to add unique new tags,
You want the user to enter the new tag in an input, and add on pressing enter
References:
appendTo().
filter().
keyup().
var value = "Tag 1";
$('#campaignTags').find('div.tags').each(function(){
if(value == $(this).text()){
alert('Please type something else');
}
});
you can user either .innerHTML or .text()
if(value === this.innerHTML){ // Pure JS
return;
}
OR
if(value === $this.text()){ // jQuery
return;
}
Not sure if it was a typo, but you were missing a close } and ). Use the jquery .text() method instead of innerText perhaps?
var value = "Tag 1";
$('#campaignTags').find(".tags").each(function(){
var content = $(this).text();
if(value === content){
return;
}
})
Here you go try this: Demo http://jsfiddle.net/3haLP/
Since most of the post above comes out with something here is another take on the solution :)
Also from my old answer: jquery - get text for element without children text
Hope it fits the need ':)' and add that justext function in your main customised Jquery lib
Code
jQuery.fn.justtext = function () {
return $(this).clone()
.children()
.remove()
.end()
.text();
};
$(document).ready(function () {
var value = "Tag 1";
$('#campaignTags').children().each(function () {
var $this = $(this);
if (value == $(this).justtext()) {
alert('Yep yo, return');)
return;
}
});
//
});
I have a script that only works in jquery 1.7.2. I'm also getting a lot of conflicts with this script.
Is there an alternative to this approach? I'm trying to count the number of input's and textarea's that have data typed inside them. I just need a number.
Here is my current script:
$('#form_register').on('keyup', function() {
var number = $('#form_register').find('input, textarea')
// filter out every empty input/textarea
.filter(function() {
return $(this).val() != '';
}).length;
$('.inputCount').val('There are ' + number + ' empty input fields');
console.log('test');
});
I'd use the change handler too, to prevent someone paste the text inside a field.
EDIT :
To count upwards as you asked in your comment:
jsBin demo
$('#form_register').on('keyup change', function() {
var number = 0;
$(this).find('input, textarea').each(function(){
if( this.value !== ''){
$('.input_count').val(number++);
}
});
});
To redo to count downwards (DEMO) just use === and exclude the print from the each function:
if( this.value === ''){
number++;
}
$('.input_count').val(number);
If you have more issues, try to wrap the code into:
(function($){ // remap '$' to jQuery
// CODE HERE
})(jQuery);
I wrote this function:
jQuery(document).ready(function() {
jQuery('input[type=text]').each( function(i) {
thisval = jQuery(this).val();
jQuery(this).blur( function() {
if (jQuery(this).val() == '') {
jQuery(this).val(thisval);
}
}); // end blur function
jQuery(this).focus( function() {
if (jQuery(this).val() == thisval) {
jQuery(this).val('');
};
});// end focus function
}); //END each function
}); // END document ready function
It's designed to get the value of an input, then if the user clicks away without entering a new value, the old value returns. This works properly with one of the inputs on the page, but not the others. However, when I remove the .blur and .focus functions and just use alert(thisval); it alerts the name of each input, so something is wrong with my function, but I can't figure out what. Any help?
You need var when declaring your variable so it's not a global one being shared, like this:
var thisval = jQuery(this).val();
Also since you're dealing specifically with text inputs you can just use the .value DOM property, like this:
jQuery(function() {
jQuery('input[type=text]').each(function(i) {
var thisval = this.value;
jQuery(this).blur( function() {
if (this.value == '') this.value = thisval;
}).focus( function() {
if (this.value == thisval) this.value = '';
});
});
});
thisval is a global variable so it is replaced with each loop. Make it local [stick var in front of it] and it should work like magic.
You should not just keep creating jQuery(this) over and over again. That is very inefficient. jQuery(this) is expensive. You should store one copy in a variable and use the variable.