I want to get an element using id:
var a = document.getElementById("hello");
and then dynamically add an attribute to it called "labelText" and assign the value "{labeltext}" to it.
do i need to use concatenation?
i tried the following but it didn't work:
document.getElementById("hello").setAttribute("labelText", "'{' + labelText + '}' ");
What you are doing basically works, with the syntax errors first explicitly identified by Vohuman corrected.
//Assign the Attribute:
var labelText='Some Value';
document.getElementById("hello").setAttribute('labelText', '{' + labelText + '}' );
//Define some variables for getting the results
var attributeEl = document.getElementById("attribute");
var theHTMLEl = document.getElementById("theHTML");
///Get the attribute value
var textLabelValue = document.getElementById("hello").getAttribute('labelText');
//Show the results:
attributeEl.textContent = textLabelValue;
theHTMLEl.textContent = document.getElementById("hello").outerHTML;
<div id="hello"></div>
The labelText attribute is:
<div id="attribute"></div>
The resulting HTML is:
<div id="theHTML"></div>
Related
Maybe I am confusing this a bit, but I have a piece of code that works like the following:
$("#myButton").on('click', function(){
var myValue = $('#myInput').val();
listSize++;
var listItem = "<li>" + myValue + "<input type='hidden' name='foo" +
listSize + "' value='" + myValue + "' /></li>";
$("ol.myList").append(listItem);
});
If the text input value contains for example, a ', then this code breaks in terms of correctly adding the hidden input value.
I was thinking that using encodeURIComponent would do the trick, but it does not.
What's the proper way to handle this?
Instead of doing this with html strings, create an actual element and set it's value property using val().
You can sanitize any possible html out of it by first inserting the string into a content element as text and retrieving it as text.
Note that the value property does not get rendered in the html the same as value attribute does so quotes are not an issue
$("#myButton").on('click', function(){
// sanitize any html in the existing input
var myValue = $('<div>', {text:$('#myInput').val())).text();
listSize++;
// create new elements
var $listItem = $("<li>",{text: myValue});
// set value of input after creating the element
var $input = $('<input>',{ type:'hidden', name:'foo'+listSize}).val(myValue);
//append input to list item
$listItem.append($input);
// append in dom
$("ol.myList").append($listItem);
});
I think this is what you are looking for:
$("#myButton").on('click', function(){
var myValue = $('#myInput').val();
listSize++;
var listItemHTML = "<li>" + myValue + "<input type='hidden' name='foo'></li>";
$(listItemHTML).appendTo('ol.myList').find('input[type=hidden]').val(myValue);
});
The appendTo function returns a reference to the just appended element.
Calling the val() function on the element will render the inserting of a quote useless since it will be interpreted as an actual value.
Safest way would be to write a wrapper
function addslashes (str) {
return (str + '')
.replace(/[\\"']/g, '\\$&')
.replace(/\u0000/g, '\\0')
}
var test= "Mr. Jone's car";
console.log(addslashes(test));
//"Mr. Jone\'s car"
I have a variable that contains HTML.
var html = '<p><span id="variable:7" class="variable-source" title="variable:TEXT_CONTAINER">DATA</span> This is a variable</p>'+
'<p><span id="input:10.New Input 2" class="input-source" title="New Screen; New Input 2">DATA</span> This is a input source</p>'+
'<p>Testing</p>';
I am trying to loop around all of the elements and replace with spans specific date. So any spans with a class of variable-source will need to be replaced with specific date, and the same for input-source.
I have tried to use the following:
$('span', html).replaceWith(function () {
var id = $(this).attr('id');
// this returns the correct id
//calculations go here
var value = 'testing';
return value
});
Which outputs the following:
testing This is a variable
All of the paragraph tags have been removed, and it seems to stop after the first paragraph. Is there something that I am missing here? I can post more code or explain more if needed.
Thanks in advance.
You need to create a html object reference, else you won't get a reference to the updated content. Then get the update content from the created jQuery object after doing the replace operations
var html = '<p><span id="variable:7" class="variable-source" title="variable:TEXT_CONTAINER">DATA</span> This is a variable</p>' +
'<p><span id="input:10.New Input 2" class="input-source" title="New Screen; New Input 2">DATA</span> This is a input source</p>' +
'<p>Testing</p>';
var $html = $('<div></div>', {
html: html
});
$html.find('span.variable-source').replaceWith(function() {
var id = this.id;
// this returns the correct id
//calculations go here
var value = 'replaced variable for: ' + id;
return value
});
$html.find('span.input-source').replaceWith(function() {
var id = this.id;
// this returns the correct id
//calculations go here
var value = 'replaced input for: ' + id;
return value
});
var result = $html.html();
$('#result').text(result);
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="result"></div>
I have a following html string of contentString:
var content =
'<div id="content">' +
'<div>' +
'<input name="tBox" id="select" type="checkbox" value="" '+
'onclick="changeView()"> Select for operation' +
'<p style="text-align:right">View details</p>' +
'</div>' +
'</div>';
Here, How I find the checkbox select by id and add attribute checked on changeView() function?
function changeView(m) {
//find the select id from content string
var checkbox = content.find($('#select'+m));
// Apply the checked property on checkbox.
checkbox.attr("checked","checked");
}
Thanks in advance.
If you convert it to a JQuery object first then you can do it like this:
var contentObj = $(content);
var checkbox = contentObj.find("#select");
checkbox.attr("checked", true);
then if you need it back at html string:
content = contentObj[0].outerHTML;
Note: If outerHTML is not working as expected, the following JQuery can be used as an alternative:
content = contentObj.clone().wrap('<div>').parent().html();
If m is meant to be the id you want to find (e.g. "select"), then use this:
var checkbox = contentObj.find("#" + m);
Live Example: Here is a working example
Here is the complete function for easy reference:
function changeView(m) {
var contentObj = $(content);
var checkbox = contentObj.find("#" + m);
checkbox.attr("checked", true);
content = contentObj[0].outerHTML;
}
You need to compile the string into a DOM object first by wrapping it in a jQuery call first. Then you can use the find method.
So:
var dom = $(content),
select = dom.find('#select');
In any case, there is no need to add the 'checked' attribute, because when you click the checkbox, it will automatically become checked.
If however, you want to still programmatically check it:
select.on('click', function () {
this.attr('checked', 'checked');
});
Simply like this
function changeView(m) {
//find the select id from content string
var checkbox = content.find('#select');
// Apply the checked property on checkbox.
checkbox.attr("checked","checked");
}
if you want to pass id then
function changeView(m) {
//find the select id from content string
var checkbox = content.find("#" + m);
// Apply the checked property on checkbox.
checkbox.attr("checked","checked");
}
Since you're using the onclick handler, you don't really need to do any of that :
in html : onclick="changeView(this);"
function changeView(box) {
if(box.checked) { stuff; }
// or get jquery ref to that box :
$(box).prop("checked", true);
}
I have 4 <div> tag and <a> tag for each <div> tags.
In each and every div tag i have inserted 2 span tag and a a tag.
When the a tag is clicked i need to get the product name and the price of that div
Here is the demo http://jsfiddle.net/8VCWU/
I get the below warning message when i use the codes in the answer ...
Try this:
$(".get").click(function(e) {
e.preventDefault();
var $parent = $(this).closest(".item");
var itemName = $(".postname", $parent).text();
var itemPrice = $(".price", $parent).text();
alert(itemName + " / " + itemPrice);
});
Example fiddle
Note that you had a lot of repeated id attributes which is invalid code and will cause you problems. I've converted the #item elements and their children to use classes instead.
jQuery
$(".get").click(function(event){
event.preventDefault(); /*To Prevent the anchors to take the browser to a new URL */
var item = $(this).parent().find('#postname').text();
var price = $(this).parent().find('#price').text();
var result = item + " " + price;
alert(result)
});
DEMO
A Quick Note about id:
The id attribute specifies a unique id for an HTML element (the value must be unique within the HTML document).
A unique identifier so that you can identify the element with. You can use this as a parameter to getElementById() and other DOM functions and to reference the element in style sheets.
solution is below
use the blow code and try it
<a data-role="link" href="javascript:linkHandler('<%= obj.productname %>', '<%= obj.price %>')" class="get" >Add <a>
function linkHandler(name, price)
{
alert(name);
alert(price);
var name = name;
var price = price;
var cartItem = new item(name, parseFloat(price));
// check duplicate
var match = ko.utils.arrayFirst(viewModel.cartItems(), function(item){ return item.name == name; });
if(match){
match.qty(match.qty() + 1);
} else {
viewModel.cartItems.push(cartItem);
var rowCount = document.getElementById("cartcontent1").getElementsByTagName("TR").length;
document.getElementById("Totala").innerHTML = rowCount;
}
}
with jQuery
$('a.get').on('click',function(){
var parent = $(this).parent();
var name = $(parent+' #postname').text();
var price = $(parent+' #price').text();
});
Or again:
$('a').click(function(e){
e.preventDefault();
var $price = $(this).siblings('#price').text();
var $postname = $(this).siblings('#postname').text();
alert($price);
alert($postname);
});
Try
function getPrice(currentClickObject)
{
var priceSpan = $(currentClickObject).parent("div:first").children("#price");
alert($(priceSpan).html());
}
and add to your a tag:
...
I'd suggest to use classed instead of id if you have more than one in your code.
The function you're looking for is siblings() http://api.jquery.com/siblings/
Here's your updated fiddle:
http://jsfiddle.net/8VCWU/14/
Hi I cleaned up the HTML as mentioned using the same Id more than once is a problem.
Using jQuery and the markup I provided the solution is trivial.
Make a note of the CSS on the below fiddle
http://jsfiddle.net/8VCWU/27/
$(document).ready(function(){
$("#itmLst a.get").click(function(){
var $lstItm = $(this).parents("li:first");
var pName = $lstItm.find("span.postname").html();
var price = $lstItm.find("span.price").html();
alert("Product Name: " + pName + " ; Price: " + price);
});
});
I have made some changes in your html tags and replace all repeated Ids with class, because you have repeated many ids in your html and it causes trouble so it is wrong structure. In HTML, you have to give unique id to each and every tag. it will not be conflicted with any other tag.
Here i have done complete bins demo. i have also specified all alternative ways to find tag content using proper jQuery selector. the demo link is as below:
Demo: http://codebins.com/bin/4ldqp8v
jQuery
$(function() {
$("a.get").click(function() {
var itemName = $(this).parent().find(".postname").text().trim();
var itemPrice = $(this).parent().find(".price").text().trim();
//OR another Alternate
// var itemName=$(this).parents(".item").find(".postname").text().trim();
// var itemPrice=$(this).parents(".item").find(".price").text().trim();
//OR another Alternate
//var itemName=$(this).closest(".item").find(".postname").text().trim();
// var itemPrice=$(this).closest(".item").find(".price").text().trim();
//OR another Alternate
//var itemName=$(this).siblings(".postname").text().trim();
//var itemPrice=$(this).siblings(".price").text().trim();
alert(itemName + " / " + itemPrice);
});
});
Demo: http://codebins.com/bin/4ldqp8v
You can check above all alternatives by un-commenting one by one. all are working fine.
I have this container:
<Div id="ListContainer">
I append these data to it :
' <a class="lesson" subjectID="'+sbj_ID+'"><b>
<span class="lesson_subject">' + sbj_Name + '</span></b></a> ';
I want to put the value of sbj_ID & sbj_Name in a variable.
localStorage['SubjectID']= "value of sbj_ID";
localStorage['SubjectName']="value of sbj_Name";
But I can't access them.
I tried :
$('#ListContainer').find('.lesson').attr('subjectID')
$('#ListContainer .lesson').children[0].getAttribute('SubjectID')
$('#ListContainer .lesson').children[2].innerHTML;
But they didn't work.
I don't know how you are appending the string, but the following is a working example:
var sbj_ID = 3;
var sbj_Name = "test";
var str = '<a class="lesson" subjectID="'+sbj_ID+'"><b><span class="lesson_subject">' + sbj_Name + '</span></b></a>';
$("#ListContainer").append(str);
alert($('#ListContainer').find('.lesson').attr('subjectID'));
-- See Demo --
I'm also not sure how LocalStorage is being used, but you should set the variables as the value, not the strings you have used:
localStorage['SubjectID']= sbj_ID;
localStorage['SubjectName']= sbj_Name;
Try this
localStorage['SubjectID']= $('.lesson').attr('subjectID');
localStorage['SubjectName']=$('.lesson_subject').text();
or
localStorage['SubjectName']=$('.lesson_subject').html();
This should work
localStorage['SubjectID'] = $('.lesson').attr('subjectID');
localStorage['SubjectName'] = $('.lesson_subject').text();