Ok.. So i have a html element that displays a current value, value is changed via range slider, i change the value of the html element using javascript with the following code:
hex_out = document.querySelector('#hex');
hex_out.value=rangeValue;
Which the above works fine, but recently I've needed to be able to add a bit of html code into hex_out.value
for example if i try
hex_out.value="<font color='red'>"+rangeValue+"</font>"
it will change hex_out.value to the code shown below
<font color='red'>Range slider value</font>"
which is obviously not what i'm trying to accomplish. How would i add html code to hex_out.value and have it display correctly?
Before anyone trys to say "This is a duplicate question", realize i've tried nearly ALL solutions shown on stack overflow with no luck
You'll need to modify the color via the element's style property. Try the following:
hex_out.style.color = 'red';
If you need to add any HTML, then (assuming that the hex_out element is a container element, and not an <input> tag), you can assign the HTML to its innerHTML property like so:
hex_out.innerHTML = '<strong>This is a <em>formatted</em> value.</strong>';
Another edit: It looks like you're using an <output> element, which doesn't accept child elements as far as I know. In this case, you'll likely want to use a regular <div> or <span> tag instead of <output> and then update its value manually as your sliders move using the innerHTML property described above.
I think you are looking for something like this:
var hex_out = document.querySelector('#hex'),
rangeValue = document.querySelector('#val');
rangeValue .addEventListener('input', function () {
hex_out.innerHTML = "<font color='red'>"+rangeValue .value+"</font>";
}, false);
<input type=range id=val>
<span id=hex>50</span>
Your difficulty arose because you put an obsolete font tag in the output tag which only accepts "phrasing content". The font tag is not supported in HTML5 and not on the list of phrasing content elements.
As #Mark said, a simple div will do if you require HTML to be rendered.
The example you gave is the thing normally expecting from javascript. I consider you want to change html of an existing element not value. If it is you can use below code:
hex_out. innerHTML ="<font color='red'>"+rangeValue+"</font>"
Existing fiddle link JSFiddle
Tested and works:
function setColor() { debugger;
Rval = parseFloat((r_out.value / 255.00).toFixed(3));
Gval = parseFloat((g_out.value / 255.00).toFixed(3));
Bval = parseFloat((b_out.value / 255.00).toFixed(3));
hex = "R: " + Rval + " " + "G: " + Gval + " " + "B: " + Bval;
var r_hex = parseInt(r.value, 10).toString(16),
g_hex = parseInt(g.value, 10).toString(16),
b_hex = parseInt(b.value, 10).toString(16),
hex1 = "#" + pad(r_hex) + pad(g_hex) + pad(b_hex);
body.style.backgroundColor = hex1;
hex_out.innerHtml = hex + [
'<br/><font size="1px">GSC RGB Selector</font>'
].join('#hex');
}
Related
The code below is to appear additional 2 textbox and 1 textarea everytime i click a button.
var x=1;
var count=0;
$('body').on('click','#add',function()
{
if(count < 6)
{
$('#div').append("<div class='line'><input type='text' name = 'txta"+x+ "' id='txta"+ x +"'><span class =wordtab></span> <textarea rows='9' onkeyup='countChar2(this)' cols='50' name = 'txtc"+x+ "' id='txtc"+ x +"'></textarea> <span class =wordtab></span><input style = 'width:50px' type='text' name = 'txtb"+x+"' id='txtb"+ x +"'><span class =wordtab></span><button class='delete' value ='Delete Row'>Delete Row</button></div><div style='margin-left: 750px' id='charNum" + x + "'></div>");
count++;
x++;
}
else
alert("Maximum 6 Skills");
});
$('body').on('click','.delete',function()
{
$(this).closest('.line').remove();
count--;
});
The below function is the code that i currently have (which i know its wrong) to put in a counter for every textarea that i added in.
function countChar2(val)
{
var len = val.value.length;
if (len >= 200)
{
val.value = val.value.substring(0, 500);
}
else
{
var id = "charNum" + x;
$(id).text((200 - len)+" words left");
}
};
So my goal is that everytime i click on the add row and start typing on the textarea, it will show the word count for that particular texarea just right below the textarea box.
To get a unique counter added to each textarea, you could append another div to the textarea with a specific class e.g.
Set the HTML structure to something such as:
<textarea></textarea><div class='text-count-area'>Word Count: 0</div>
Add the following JS at the point where each textarea is added e.g. just before 'count++' in your original code (note: this is not the most efficient way of doing this, but this will work easily with your current code):
// Bind the text area to the keyup event
$("textarea").on('keyup', function(val) {
// Simple word count
var words = this.value.match(/\S+/g).length;
// Write the word count to the immediate text-count-area div afterwards
$(this).next(".text-count-area").text("Text count" + words);
});
The word count is kept simple here for readability, but the logic from other answers (highlighted in the comments) could be implemented at this stage.
A JS Fiddle demo of this working is here.
Let see your example:
You add each div by .append method, it's correct
You count input symbols by onkeyup event, it's correct too
All you need is update your countChar2 function because this function has wrong body in that lines:
var id = "charNum" + x;
$(id).text((200 - len)+" words left");
First of all: try to debug your code via developer tools in your favorite browser with breaks in that lines. This step can give your much more and quickly info than posting question in stackoverflow :)
For onkeyup event you should use link to this object instead of id inside your function:
$(val).parent().find('.words-left').val((200 - len));
This line uses val as a link to textarea object in just appended line. .parent() gives you access to wrapper and find() finds input for words left field. (I've added '.words-left' class to your input, see my fiddler bellow). And this code works in stage of your just added line.
Your code of $('body').click() should be executed, when document is fully loaded and DOM ready. But all your ids that you will create in future doesn't appends that DOM. That's why your delete function works properly - that function uses class selector instead of id.
Proposed by me code doesn't uses id selector because it is not needed. All that needs to me - link to current object in new line, val - what I need for that operation.
BTW: When you implement function that works with objects, such as onkeyup='countChar2(this)', better way to use object as passed variable - var countChar = function(obj) {. Because val is using for scalar values in common way.
You can check my code here https://jsfiddle.net/jo0cd3yr/1/
I want to "copy" a certain elements and the change some of the text inside them with a regex.
So far so good: (/w working fiddle - http://jsfiddle.net/8ohzayyt/25/)
$(document).ready(function () {
var divs = $('div');
var patt = /^\d\./;
var match = null;
for (i = 0; i < divs.length; i++) {
match = ($(divs[i]).text().match(patt));
$(divs[i]).text($(divs[i]).text().replace(match[0], "5."));
}
});
HTML
<div>1. peppers</div>
<div>2. eggs</div>
<div>3. pizza</div>
This works exactly the way I want it, but I want to add some of the content dynamically, but when I try to change the content of the copied divs, nothing happens.
Please refer to this fiddle:
http://jsfiddle.net/8ohzayyt/24/
I have put some comments, to be more clear what I want to achieve.
I thing that your problem is that you're not passing an element to your changeLabel function, but just a string.
Look at this solution: http://jsfiddle.net/8ohzayyt/26/
Here is the line I changed to make your code work:
var newContent = $("<hr/><div id='destination'>" + $("#holder").html() + "</div>");
I just wrapped your HTML in $(). this creates an element from the string.
try:
var newContent = $("<hr/><div id='destination'>" + $("#holder").html() + "</div>");
EDIT:
Brief explanation What I've done.
In order to make $(el).find('div'); work changeLabel() needs an element. Instead of passing newContent as a string doing the above will make it pass as an element which will make $(el).find('div'); work.
GetElementById works if I manually added a div id="something" inside the body and use window.onload = init method in the script to get it. Works great.
But if I used a for loop to generate divs where id's is 1,2,3 and so on. I can't get it. Is there a way to get to those generated divs?
This is what generates the html code (just to be clear what I mean):
for(i=0; i<randomizeColoursList.length; i++)
{
document.getElementById("renderColors").innerHTML +=
'<div class=\"box\"><div class=\"' + i + '\"><font color=\"'
+ randomizeColoursList[i] + '\">'
+ "" + '<img src=\"dist/card_bg.gif\"></div></div>';
}
Generates one of these:
<div class="8"><font color="#3be6c4"><img src="dist/card_bg.gif"></font></div>
Div with class 8 is the id I want to get for example. But is says it's null.
Thanks.
The id is null because you haven't specified it in your markup creation. Looks like you're assigning the id value to class instead.
Generate something more like this:
<div id="div1" class="8"><font color="#3be6c4"><img src="dist/card_bg.gif"></font></div>
Also, you don't need to use font tags, nor should you use them. Just add the styling to the div.
<div id="div1" class="8" style="color:#3be6c4;"><img src="dist/card_bg.gif"></div>
The way you're going about this is a little backwards. If you write your code like I have below, then you don't need to give the divs IDs, you end up with an array full of references to them anyway.
var i, div, img;
var createdDivs = [];
for(i=0; i<randomizeColoursList.length; i++)
{
div = document.createElement('div');
img = document.createElement('img');
div.className = "box";
div.style.backgroundColor = randomizeColoursList[i];
div.style.color = randomizeColoursList[i];
img.src = "dist/card_bg.gif"
div.appendChild(img);
document.getElementById("renderColours").appendChild(div);
createdDivs.push(div);
}
Live link: http://jsfiddle.net/7HjLL/
If I have a container div called #container which has a bunch of .inside divs in it, how would I go about checking whether a certain .inside div with a specified content (just a string of English text) exists or not? I'm doing this to prevent duplicates in a notification system I'm setting up for a website. I don't need the actual text - just whether it exists. Also, being able to modify the content of the .inside div if it's found would be good, so I can increment and show the number of times that message has occurred (grouping, if you like).
Thanks,
James
I like using selectors (others have used .filter, which is equally an option).
$(".inside:contains('waldo')").css({color: 'red'});
This is case sensitive.
Use the contains-selector[docs], then the length[docs] property to see how many were found.
var some_string = "test";
var els_with_string = $('#container .inside:contains(' + some_string + ')');
// use .length to check to see if there was at least one
if( els_with_string.length ) {
alert( "at least one already exists" );
}
From the docs:
Description: Select all elements that contain the specified text.
The matching text can appear directly within the selected element, in any of that element's descendants, or a combination thereof. As with attribute value selectors, text inside the parentheses of :contains() can be written as bare words or surrounded by quotation marks. The text must have matching case to be selected.
With respect to modifying the content if found, it would depend on what sort of modification you want to do. I don't know exactly what you mean by grouping.
EDIT: With respect to your comment, you could accomplish what you need like this:
var error = "ERROR:SomeError ";
var el_with_error = $('#container .inside:contains(' + error + ')');
if (el_with_error.length) {
var text = el_with_error.text();
if (/\(\d+\)/.test(text)) {
var new_text = text.replace(/\((\d+)\)/, function(s, g1) {
g1++;
return "(" + g1 + ")";
});
el_with_error.text(new_text);
} else {
el_with_error.text(text + " (2)");
}
} else {
$('#container').append('<div class="inside">' + error + '</div>');
}
Live Example: http://jsfiddle.net/ScZbV/
We could get by without the regular expression if you were able to wrap the grouping quantity in a <span> element.
var error = "ERROR:SomeError ";
var el_with_error = $('#container .inside:contains(' + error + ')');
if (el_with_error.length) {
var span = el_with_error.find('span');
if (span.length) {
var num = +span.text();
span.text( ++num );
} else {
el_with_error.append(" (<span>2</span>)");
}
} else {
$('#container').append('<div class="inside">' + error + '</div>');
}
Example: http://jsfiddle.net/ScZbV/1/
To check existence
$("#container .inside:contains('old text')").size() > 0
To modify the text
$("#container .inside:contains('old text')").text('new text');
Here's a slightly different way of looking at it...
Apply a class name for each "type" of notification. So your notification markup looks like:
<div class="inside error">Error</div>
Then inside of looking for a string inside these divs, use these new class names to your advantage and make use of .find(). If jQuery returns an object then its exists, so do something with it. But if it returns nothing then add it.
Example: http://jsbin.com/imexi4
How could I change the text below so that the text within it has a number appended to it.
<div class="right">This is some text</div>
<div class="right">This is some text</div>
<div class="right">This is some text</div>
So the code above would become,
This is some text
This is some text
This is some text
you should use an ordered list... ol
or else you will need use css and add the content property your selector with the :after pseudo element.
How about the following?
$("div.right").each(function(i){
$(this).prepend((i + 1) + ". ");
});
UPDATE:
Here is one way that should work.
"number" is a custom element (it can be anything you want) that will/should be ignored by browsers.
$("div.right").each(function(i){
$(this).find("number").remove().end()
.prepend("<number>(i + 1) + ". </number>");
});
OR use the following which is probably a little slower but semantically correct...
$("div.right").each(function(i){
$(this).find("span.number").remove().end()
.prepend("<span class='number'>" + (i + 1) + ". </span>");
});
OR an even better way would be to prepend span.number before your first drag:
$(function(){ // document ready...
// caching the "numbers" will only work if you use the DOM
// for updating div position (like jQuery's "append()", "prepend()", "before()", and "after()") and not "innerHTML" or "html()"
var numbers = $("div.right").each(function(i){
$(this).prepend("<span class='number'>" + (++i) + "</span>. ");
}).find("span.number");
function dragEnd(){
// do your drag end stuff here...
numbers.each(function(i){
this.innerHTML = ++i;
});
)};
});
This is really an elaboration on another comment. I can't format code in a comment, I guess. You could use jQuery core's each:
$('div.right').each(function(ii){
html = $(this).html();
$(this).html(ii + '. ' + html);
});
jQuery selectors are your friend...
Get your stuff and loop on through something like this:
texts = $("div.right");
for(i = 0;i < texts.length;i++)
{
node = $(texts[i]);
content = node.html();
number = i + 1;
node.html(number + ". " + content);
}
Update: Jeez, last time post untested code straight off the dome here (disclaimer: not actually the last time). In the interest of correctness, I've updated it to at least run (and work!) if you still want to do it this way. Although I admit the other solutions are cleaner and more elegant.
Does this have to be done dynamically through jquery? Can't you just combine all that text into one div and then make a ordered list around it?
Using [] notation with a result set will give you the raw DOM element which does not have the html() function. Use the eq() function to get each element wrapped in a jQuery object.
You can also use each() as mentioned above, but I prefer straight 'for loops' so I don't have to adjust for 'this' if I'm in an event handler.
var texts = $("div.right");
var elem;
for(i = 1; i < texts.length; i++) {
elem = texts.eq(i);
html = elem.html();
elem.html(i + '. ' + html);
}