I have a variable like this:
var a=$('#div2').html();
after some code div be changed, so 'a' be changed too, but i want first value of 'a'.
Thanks.
Try this:
HTML:
<div id="div2"> Sample </div>
<input type="button" onclick="change();" value="change" />
SCRIPT:
<script>
var a = $('#div2').html();
function change() {
$('#div2').html('Change');
var previous = a;
a = $('#div2').html();
alert(previous);
}
</script>
DEMO
Related
Hello everyone im trying to get the id of a div through a function in javascript like this:
<div id="txtHint" onload="getId(this);"></div>
The function is located just before </body> tag of my html page
function getId(theId) {
var name = document.getElementById(theId);
}
In the body of my html page i have a button:
<button type="button" onclick="alert(getId())">get</button>
I receive an undefined alert on clicking
How do i get the div's id?
Anyone can help?
Though I don't know the use case of this, you can pass the id to the function and return that from the function:
function getId(theId) {
var name = document.getElementById(theId);
return name.id;
}
<div id="txtHint"></div>
<button type="button" onclick="alert(getId('txtHint'))">get</button>
Update: If you want to get all id's by tag, simple pass the tag to the function and get all the id's of those element:
function getId(el) {
var element = document.querySelectorAll(el);
var id = [...element].map(i=>i.id).filter(i=>i);
return id;
}
<div id="txtHint1">First</div>
<div id="txtHint2">Second</div>
<div id="txtHint3">Third</div>
<div id="txtHint4">Fourth</div>
<button type="button" onclick="alert(getId('div'))">get</button>
The way your functions is written the only way is to have global variable
var divId = null;
function getId(div) {
divId = div.id;
}
function getId() {
alert(divId);
}
And here is my suggetions on doing it
First way is to "mark" the div at onload event and get the id of it using this "mark"
function markDiv(thisDiv) {
thisDiv.classList.add('mark')
}
function getMarkedDiv() {
var div = document.querySelector('.mark');
alert(div.id);
}
<div id="Mark" onload="markDiv(this)" class="mark"></div>
<button onclick="getMarkedDiv()">button</button>
Another way is to wrap the button and the div inside one parent
function getMySiblingId(button) {
alert(button.parentElement.firstElementChild.id);
}
<div id="Parent">
<div id="Mark"></div>
<button onclick="getMySiblingId(this)">Button</button>
</div>
Or the easiest way is to wrap button inside the desired div
function getId(btn) {
alert(btn.parentElement.id);
}
<div id="Mark">
<button onclick="getId(this)">Click me</button>
</div>
<div id="Alice">
<button onclick="getId(this)">Click me</button>
</div>
<div id="Charlie">
<button onclick="getId(this)">Click me</button>
</div>
Of course in all this scenarios i didn't assume that you want to get ids of multiple divs
so i remade the code
function divField(theDivFieldId) {
var name = document.getElementById(theDivFieldId);
return name.id;
}
html
<div id="txtHint" onload="alert(divField(this));"></div>
and nothing happens
I'm trying to hide a part of every user email, registered in a website.
So lets say I have get zero#example.com and I want to hide everything after the "#". And only show it if someone clicks on whats left of the email.
Any help would be appreciated.
This just hides everything.
<p>
<button onclick=".hide('#email')">Hide</button>
<button onclick=".show('#email')">Show</button>
</p>
<div id="email">
<h2>zero#example.com<h2>
</div>
Try following:
<script type="text/javascript">
function show(){
document.getElementById('trail').style.display = 'inline';
}
function hide(){
document.getElementById('trail').style.display = 'none';
}
</script>
<p>
<button onclick="hide()">Hide</button>
<button onclick="show()">Show</button>
</p>
<div id="email">
<h2>zero<span id="trail">#something.com</span></h2>
</div>
You can use split ( => https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/split ) if you know what character to expect. In this case:
var full; // let's say, it already has a value (f.e. zero#something.com)
var visiblePart = full.split("#")[0];
and eventually you can do something like this on click:
function show(){
document.getElementById("emailH2").innerHTML = full;
}
function hide(){
document.getElementById("emailH2").innerHTML = visiblePart;
}
and
<h2 id = "emailH2">zero#something.com<h2>
My view has a button and the view is looped.so it has raws.
when i click the button of a single raw i need to color that button.
so i added a onclick="select_Button(<?php echo $rawID?>)" to the raw's button in my view
select_Button is my funtion in js
function select_Button(rawNumberOfVote) {
var RawNumber = rawNumberOfVote;
alert ("Form submitted successfully" + RawNumber);
var upVote = document.getElementById("up_vote");
upVote.style.background = "green";
}
like above i send the rawID to the funtion.
how can i edit this line to accept the view called up_vote in that particular raw id that i got from parameter.
var upVote = document.getElementById("up_vote");
becuz if i only use this line it will color the first raw's button instead the one i wanted
Thank you
you can use data attribute in your html referencing to this page and this page. and retraive with this this jquery code snippet:
$("[data-test ='my value']")
or this code snnipet in javascript:
document.querySelectorAll(".example").find(function(dom){
return dom.dataset.test == "expected-value"
});
Update:
accourding to this page querySelectorAll return nodeList and NodeList are not array and we cannot use find method so I change my answer to this code:
<html>
<body>
<div class="post" data-key="1">
<lable>test</lable>
<button type="button" onclick="upvote(1)">up vote</button>
</div>
<div class="post" data-key="2">
<lable>test</lable>
<button type="button" onclick="upvote(2)">up vote</button>
</div>
<div class="post" data-key="3">
<lable>test</lable>
<button type="button" onclick="upvote(3)">up vote</button>
</div>
</body>
</html>
<script type="text/javascript">
var upvote = function(id) {
var nodes = document.querySelectorAll(".post");
console.log(nodes.length);
for(i = 0 ; i < nodes.length ; i++){
console.log(nodes[i].dataset.key);
if (nodes[i].dataset.key == id)
nodes[i].style.backgroundColor = "red";
}
};
</script>
i need find all images from textarea value and then replaces with inputs text elements
and the value of those with the src of the img was reemplace
after that the final string is output on a new div ('#newDiv')
my script dont replace nothing i dont know why
here is what i have done so far,
<html>
<head></head>
<body>
<textarea id="caja"></textarea>
<input type="button" onClick="parsingHtml()" value="read">
<div id="newDiv"></div>
<script type="text/javascript" src="jquery-1.11.1.min.js"></script>
function parsingHtml()
{
var content = $('#caja').val();
var newContent = $(content).find("img").replaceWith('<input type="text">');
alert(newContent)
$('#newDiv').html(newContent);
};
</body>
</html>
any ideas? thanks in advance!
There are 2 problems that I can see
newContent is referring to only the img elements, not the complete content
Since you are passing the value to jQuery, if the value does not start with < it will be considered as a selector not as a element creation command
So
//dom ready handler
jQuery(function($) {
//click event handler registration
$('#read').click(parsingHtml);
})
function parsingHtml() {
var content = $('#caja').val();
var newContent = $('<div />', {
html: content
});
newContent.find("img").replaceWith('<input type="text">');
console.log(newContent)
$('#newDiv').html(newContent.contents());
};
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<textarea id="caja"></textarea>
<input type="button" id="read" value="read">
<div id="newDiv"></div>
http://jsfiddle.net/AHd34/2/
$(document).ready(function(){
var a = document.createTextNode('AAA');
$jA = $(a);
$('#listContainer').append(jA);
});
<body>
<div id="content">
<div id="newLists" style="border:none;">
<!-- I'm going to need to reorganize this css so the above line does not need to happen -->
<p id="newListTitle"><span id="newListSpan">Here is a list </span></p>
<div id="listContainer">
</div>
</div>
</div>
I've never used jsfiddle before and it seems to just not be working at all. Probably something very simple and silly.
2 things:
first: in the console you can see that createTextElement doesn't exist
second: you declare a variable $jA and then append a variable jA (without the $).
Here's the working code:
http://jsfiddle.net/AHd34/3/
$(document).ready(function(){
var a = document.createTextNode('AAA');
$jA = $(a);
$('#listContainer').append($jA);
});
Try this
$(document).ready(function(){
var a =document.createElement("a");
a.innerHTML="AAA";
$('#listContainer').append(a);
});
http://jsfiddle.net/AHd34/7/