Develop Reference

How to make td tag look like a tag in HTML?

I have some rows that using ajax to get data, if I use a tag, the browser will be refresh and some data will lost. Then I just use td tag, but I want to make it look like a tag (color, cursor a hand)
Here my code:
<td style="color: green;" onclick="myFunction(this)">hello</td>
// failed with: <td style="color: green;" onclick="myFunction(this)">hello</td>

You can use following css to give td look and feel like a.
td {
color: #337ab7;
text-decoration: none;
cursor: pointer;
}
td:focus, td:hover {
color: #23527c;
text-decoration: underline;
}

Color should work the way you have it.
for cursor you could try
td {
cursor: pointer;
}

You should use a, but return false after your function and use # as href value:
hello

While you could do that using the cursor: pointer CSS-property, I'd rather use the <a> tag and set a click event handler like this:
<a id="clickable">Click</a>
<script>
document.getElementById("clickable").addEventListener('click', function(e) {
alert("Clicked")
e.preventDefault()
return false
})
</script>
See a working example here

A <td> tag is actually part of the <table> tag and should not be used outside it.
What you're better off doing is simply creating a new button using a <div> element and some CSS
.button {
display: inline-block;
padding: 5px 12px;
background: #09c;
color: #eee;
cursor: pointer;
border-radius: 3px;
border: 1px solid #28f;
}
<div class="button">My button text</div>
display: inline-block causes the <div> element to not take up the entire width of the page (just wrap the contents).
cursor: pointer will make the cursor literally look like a pointer when hovering over the element.
Not using a table tag here makes much more sense since you're not displaying a table (From what I can see in the question).
And that's pretty much it!

Set value of Textarea after jquery.colorfy

I use jquery.colorfy https://github.com/cheunghy/jquery.colorfy to change the key word color in the textarea.
I can set value use $('#textarea').text("value"); to change my textarea value.
The problem is: After the code $('#textarea').colorfy("markdown");, the command: $('#textarea').text("value"); is dead.
Could someone tell me what happened? Thanks a lot.

Try like this:
$(document).ready(function(){
$('#area').colorfy("markdown");
$('#area').text("value");//will be hidden you can see by inspecting the html
$('.area').html("value");// will be visible to you
});
Note: What i see from the example is it sets display:none to the textarea but creates a div with the same class which is the class of text area and applies it's own css on these.
$(document).ready(function(){
$('#area').colorfy("markdown");
$("#click").click(function(){
$('.area').html("value");// will be visible to you
});
});
.area {
float: auto;
margin-left: auto;
margin-right: auto;
width: 200px;
max-width: 200px;
height: 200px;
border-color: black;
border-width: 2px;
border-style: solid;
padding: 8px;
font-size: 15px;
text-align: left;
}
<script type="text/javascript" src="http://code.jquery.com/jquery-2.1.3.min.js"></script>
<script type="text/javascript" src="http://cheunghy.github.io/jquery.colorfy/jquery.colorfy.js"></script>
<script type="text/javascript" src="http://cheunghy.github.io/jquery.colorfy/jquery.colorfy.markdown.js"></script>
<textarea id="area" class="area">
hi
</textarea>
<button id="click">click!</button>

Do operate first on text of textarea before applying colorfy or else post applying manage with span it adds with class
After you write $('#textarea').colorfy("markdown"); it applies color ie. custom css by modifying the textarea text by adding span and class. Tested this plugin please see the screenshot below.
Quick Note: Please dubug more as per your need.

Blog / Message - How do I fix that empty message divs will piling on / next to each other and make the close button work?

So I'm making a sort of blog posting system or TODO list, however you want to call it.
I want that the following can happen / is possible:
[Working] The user types something in the textarea
[Working] The user clicks on the button.
[Working] A new div will be created with the text of the textarea.
[Working] The textarea will be empty.
[Not Working] The user has got the choice to delete the post by clicking the 'X' on the right side of each '.post' div.
BUT: If I click on the button when there's nothing in the textarea, there appears an empty div, with only an 'X' close button, no background color either. They appear on the same line as the previous message, so you can get a lot of 'X's next to each other.
AND: Clicking the 'X' close button doesn't do anything. No errors in Firefox console.
If it's not clear enough, run this JSFiddle, click the button and I think you'll understand what I mean:
JSFiddle
HTML:
<!DOCTYPE html>
<html>
<head>
<link href="main.css" rel="stylesheet">
<script src="jquery.min.js"></script>
<meta charset="UTF-8">
</head>
<body>
<div id="blog">
<h1>Blog post application</h1>
<div id="post-system">
<textarea id="poster" rows="5" cols="50" placeholder="Update status."></textarea>
<div id="button">Post</div>
<div id="posts">
</div>
</div>
</div>
</body>
</html>
jQuery Script:
<script>
$(document).ready(function () {
$('#button').click(function () {
var text = $('#poster').val();
$('#posts').prepend("<div class='post'>" + text + "<span class='close-post'>×</span></div>");
$('#poster').val('');
});
$('.close-post').click(function () {
('.close-post').parent().hide();
});
});
</script>
CSS:
body {
margin: 0;
padding: 0;
font-family: sans-serif;
}
#blog {
background-color: blue;
margin: 50px;
padding: 50px;
text-align: center;
border-radius: 10px;
color: white;
display: block;
}
#poster {
color: default;
resize: none;
border: 1px solid black;
text-decoration: blink;
font-size: 20px;
display: inline-block;
position: relative;
border-radius: 5px;
border: 2px solid black;
padding-left: 10px;
padding-top: 5px;
}
#button {
background-color: #00FFFF;
color: white;
border: 2px solid white;
border-radius: 5px;
cursor: pointer;
width: 50px;
float: left;
}
.post {
background-color: white;
color: blue;
margin-top: 20px;
width: auto;
display: block;
}
.close-post {
margin-right: 10px;
float: right;
color: red;
cursor: pointer;
}

You appear to have two issues:
1) You don't want a post to be created if the textarea is empty
Simple fix . . . check to see if it is empty, before calling the logic to add the new post (and use jQuery's $.trim() to account for only blank spaces):
$('#button').click(function() {
var text = $.trim($('#poster').val());
if (text !== "") {
$('#posts').prepend("<div class='post'>" + text + "<span class='close-post'>×</span></div>");
$('#poster').val('');
}
});
2) The 'X' buttons are not closing the posts
This also should be a pretty easy fix . . . the reason that they are not working is because the 'X' buttons don't exist when the page is loaded so $('.close-post').click(function() { is not binding to them on page load. You will need to delegate that event binding, so that it will apply to the 'X' buttons that are dynamically added after the page is loaded.
Now, not knowing what version of jQuery that you are using (I can't access jsFiddle from work), I'll point you to the right place to figure out the correct way to do it: https://api.jquery.com/on/
If it is jQuery 1.7 or higher, you would do it like this:
$("#posts").on("click", ".close-post", function() {
$(this).parent().hide();
});
If your version is earlier than that, then investigate the jQuery .delegate() and .live() methods to determine which is the right one to use for your code..

Try this:
$(document).ready(function() {
$('#button').click(function(event) {
event.preventDefault();
var text= $('#poster').val();
if (text === '') {
alert('Nothing to post!');
return;
}
$('#posts').prepend("<div class='post'>" + text + "<span class='close-post'>×</span></div>");
$('#poster').val('');
});
$('#posts').on('click', '.close-post', function() {
$(this).closest('.post').fadeOut();
});
});
JSFiddle

The way you are doing this, the user will only ever see what they are posting - if you're trying for a chat type where users talk to each other then you will need to store what is being typed on the server side and refresh the screen using something like ajax
but in response to your question, you need to bind the close click like this:
$( "#posts" ).on( "click", ".close-post", function() {
$(this).parent().hide(); // $(this) is the clicked icon, the way you did it above wouldn't as if it had the dollar, it would close all .close-post parents
});
See the part about delegated events: http://api.jquery.com/on/

how to make an image work as a check box?

I am working on phone-gap application in dream-weaver
I have 2 divs .pics and .cover
<div class="pics">
<div class="cover"></div>
</div>
the main idea is to change the colour of the cover div and toggle a JS variable between true and false
var checked=false;
$('.pics').click(function(){
CheckToggle();
});
function CheckToggle(){
if(checked==false){
checked=true;
$('.cover').css({"background":"rgba(255,255,255,.5)"});
}
else
checked=false;
}
I click on .pics and nothing happens
I think there is an error in the jquery code
This is what I used after all
$(function(){
$( "#item1" ).bind( "tap", PicCheck );
var checked;
var choosen="#item1";
checked=$(choosen).attr('pcheck');
function PicCheck( event ){
if(checked=="false"){
$(choosen).toggleClass("selected");
checked="true";
}
else if(checked=="true"){
$(choosen).toggleClass("selected");
checked="false";
}
$(choosen).attr('pcheck',checked);
}
});

With some css you can implement a checkbox and radio buttons with pictures. Try this :
<div>
<input id="input-1" class="img-checkbox" type="radio" name="selectTipo">
<label for="input-1" class="">
<img src="http://upload.wikimedia.org/wikipedia/commons/thumb/6/61/HTML5_logo_and_wordmark.svg/128px-HTML5_logo_and_wordmark.svg.png">
</label>
<input class="img-checkbox" type="radio" id="input-2" name="selectTipo">
<label for="input-2">
<img src="http://www.javatpoint.com/images/javascript/javascript_logo.png">
</label>
And in your css :
input.img-checkbox[type=radio], input.img-checkbox[type=checkbox] {
display: none;
}
img{
height:100px;
}
input.img-checkbox[type=radio]+label, input.img-checkbox[type=checkbox]+label {
border: 10px solid transparent;
display: inline-block;
border-radius: 10px;
}
input.img-checkbox[type=radio]:checked+label, input.img-checkbox[type=checkbox]:checked+label {
border: 10px solid #C6ECED;
display: inline-block;
}
See the result in the follow jsfiddle

I'd skip the Javascript and use a label element and the :checked selector.
#example {
visibility: hidden;
width: 0;
}
label {
color: purple;
}
#example:checked + label {
background-color: red;
color: white;
}
The HTML would be like this:
<input id="example" type="checkbox" name="example" value="true">
<label for="example">Example</label>
With this approach you wouldn't need to worry about tracking the checked variable and you can just figure it out normally.
Here's a demo: http://jsbin.com/cirali/1/edit?html,css,output

It is usually most convenient to use additional class for your purpose.
Here is a simple example:
var checked = false;
$('.pics').click(function() {
CheckToggle();
});
function CheckToggle() {
$('.cover').toggleClass('selected');
checked = $('.cover').hasClass('selected');
}
.cover {
background: red;
}
.cover.selected {
background: green;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="pics">
<div class="cover">test</div>
</div>
Edit:
Since you are using jQuery mobie, you might want to try the vclick or tap events instead of the regular click event.

Depending on how you have the elements styled, it might be better to put the action on the .cover element... If the child element .cover is the exact same height and width of the parent element .pics you wont be able to click on .pics

How to show and hide fieldset content on click of the legend

I have a html page as below,
the tags code is :
<fieldset>
<legend>Tags</legend>
<div>
<label>
<input type="checkbox" name="col" value="summary" checked="checked" />
Name
</label>
......
</div>
</fieldset>
But i want to make the page as below:
In this screenshot, when i click the Columns, it will be fold and the tags invisible. Any one know how to do this? Add a CSS or JS? Thanks

It can be done by first finding all of the legend elements, then assigning an onclick handler. The handler is assigned to the first div found in the legend's parent. So this will work even if you have multiple fieldsets and legends on the same page.
jsFiddle Demo
window.onload = function(){
var legends = document.getElementsByTagName("legend");
for(var i=0; i<legends.length; i++)
{
legends[i].onclick = function()
{
var myDivs = this.parentNode.getElementsByTagName("div");
var myDiv;
if(myDivs.length > 0)
{
var myDiv = myDivs[0];
if(myDiv.style.display == "")
{
myDiv.style.display = "none"
}
else
{
myDiv.style.display = "";
}
}
}
}
};
​
In the demo, I also added CSS to the legend cursor:pointer;, which just shows the hand when you hover over the legend (to indicate to click).

You can modify the legend using CSS like you do for any other html element. Using Jquery is very simple, just have to do something like this:
Jquery:
$(function(){
$('legend').click(function(){
$(this).nextAll('div').toggle();
$(this).hasClass('hide')?($(this).attr("class", "show")):($(this).attr("class", "hide"));
});
})​
CSS:
.hide{
padding-left: 10px;
background: url('img/down.gif') no-repeat left middle;
}
.show:after{
padding-left: 10px;
background: url('img/up.gif') no-repeat left middle;
}
Fiddle here

I know is not fieldset, but its design is looking exactly as the one you posted, so I guess this makes the trick. The code below is what you'r looking for, and some explanations about it are below the code:
<head>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.8/jquery.min.js"></script>
<script>
$(document).ready(function(){
$('#title').click(function(){
$('#tags_check').toggle();
});
})
</script>
<style type="text/css">
#content {
position: relative;
padding: 10px;
}
#title {
border: 1px solid grey;
position: absolute;
background-color: #ccc;
top: -5px;
left: 15px;
z-index: 1;
cursor: pointer;
}
#tags_check {
border: 1px solid grey;
position: relative;
z-index: 0;
top: 3px;
padding: 5px;
}
</style>
</head>
<body>
<div id="content">
<div id="title">Columns</div>
<div id="tags_check">
<input type="checkbox" name="col" value="summary" checked="checked" /> Name1
<input type="checkbox" name="col" value="summary" checked="checked" /> Name2
</div>
</div>
</body>
I'm using jquery, because is incredible easier than writtingh any other javascript, and I'm loading the library via CDN. As you see, show or hide is pretty easy, just when the document is loaded, toggle between both states, show or hide. I include the ID of the elements (as you can see I changed the layout) to pick them up easily.
About the desing, with fieldset... is going to be complicated achieve what you posted. Better just two divs, 'position: relative' to move them easily up and down. The CSS shows z-index to put one over the oter, and this only work on relative and absolute elements, along the top and left properties. Hope you like it!