My code looks like this:
function myFunction(result) {
var json = JSON.parse(result)
var jsonKeys = Object.keys(json)
var items = document.getElementById("items");
var adds = items.getElementById("add");
clearA()
var i;
for (i = 0; i < jsonKeys.length; i++) {
var btn = document.createElement("BUTTON");
console.log(jsonKeys[i]);
btn.innerHTML = jsonKeys[i]
btn.setAttribute("id", jsonKeys[i]);
btn.onclick = function() { run(this.id); }
items.appendChild(btn)
}
}
I can get items and use them but when I try to get the child element "add" I get items.getElementById is not a function
This is the html:
<div id="items">
<div id="add">
<input type="submit" value="add" onclick="foo(add)">
</div>
</div>
Change it to:
var items = document.getElementById("items");
var adds = document.getElementById("add");
Since ids are meant to be unique on a document, only document.getElementById exists. You could use items.querySelector('#id'), but this is probably a manifestation of a larger problem where you have similar HTML structure for multiple elements, with duplicated ids. In this case, it is recommended that you switch to classes and use items.querySelector('.classname').
Related
I have a template that I'm cloning to make Single Page Application. Inside this template are some div's that should have a unique id's so that it should be working individually when I open multiple apps(clone multiple divs)
<template id="templ">
<div id="name"></div>
<div id="btn">
<fieldset id="fld">
<input type="text" id="userMessage"placeholder="Type your message…" autofocus>
<input type="hidden">
<button id="send" >Save</button>
</fieldset>
</div>
</template>
and I'm cloning it like this
var i =0
let template = document.querySelector('#templ')
let clone = document.importNode(template.content, true)
clone.id = 'name' + ++i // I can't change the Id o this name div
document.querySelector('body').appendChild(clone)
Thanks
clone.id is undefined since clone is a #document-fragment with two children.
You need to query the 'name' child and change its id, for example like this:
const template = document.querySelector('#templ')
const body = document.querySelector('body')
function appendClone(index){
let clone = document.importNode(template.content, true)
clone.getElementById('name').id = 'name' + index
// all other elements with IDs
body.appendChild(clone)
}
Then you can iterate over the amount of clones and simply call the function with the loop index:
let clones = 5
for (let i = 0; i < clones; i++){
appendClone(i)
}
store the dynamic HTML data in script element and add when ever required by replaciing with dynamic data.
HTML Data:
<script id="hidden-template" type="text/x-custom-template">
<div id='${dynamicid}'>
<p>${dynamic_data}</p>
</div>
</script>
Script to replace and append.
var template_add = $('#hidden-template').text();
var items = [{
dynamicid: '1',
dynamic_data: '0'
}];
function replaceDynamicData(props) {
return function(tok, i) {
return (i % 2) ? props[tok] : tok;
};
}
var dynamic_HTML = template_add.split(/\$\{(.+?)\}/g);
$('tbody').append(items.map(function(item) {
return dynamic_HTML.map(replaceDynamicData(item)).join('');
}));
I am making a To-do list, where I want to be able to add new tasks, and delete tasks that are checked off. However, it seems my function just deletes all tasks, not just the ones that are checked off. Neither does it seem to allow new tasks to be added.
html:
<h1 id="title"> To-do list</h1>
<div id="task_area">
</div>
<input type="text" id="putin"></input>
<button id="add">add</button>
javascript:
<button id="clear">Clear completed tasks</button>
var tasks = document.getElementById("task_area")
var new_task = document.getElementById("add")
var clear = document.getElementById("clear")
new_task.addEventListener("click", function() {
var putin = document.getElementById("putin")
var input = document.createElement('input')
input.type = "checkbox"
var label = document.createElement('label')
label.appendChild(document.createTextNode(putin.value))
task_area.appendChild(input)
task_area.appendChild(label)
})
clear.addEventListener("click", function() {
for (i = 0; i < task_area.children.length; i++) {
if (task_area.children[i].checked === true) {
task_area.remove(tasks.children[i])
}
}
})
jsfiddle: https://jsfiddle.net/4coxL3um/
.remove removes the element you are calling it from, and doesn't take an argument for what to remove. The following:
task_area.remove(tasks.children[i])
should be
tasks.children[i].remove()
EDIT: As Mononess commented below, this will only remove the checkboxes and not the labels. While you could delete both using Jayesh Goyani's answer below, it's probably better that each input/label pair be wrapped in a single div or span for easier management.
You could try adding an event listener to each child of task_area that calls the below function. Haven't gotten a chance to test it out, and may not fulfill all of your requirements, but should get the job done.
function removeClicked() {
this.parentNode.removeChild(this);
}
Please try with the below code snippet. Below code will help you to remove selected checkbox with label.
<body>
<h1 id="title">To-do list</h1>
<div id="task_area">
</div>
<input type="text" id="putin" />
<button id="add">add</button>
<button id="clear">Clear completed tasks</button>
<script>
var tasks = document.getElementById("task_area")
var new_task = document.getElementById("add")
var clear = document.getElementById("clear")
new_task.addEventListener("click", function () {
var putin = document.getElementById("putin")
var input = document.createElement('input')
input.type = "checkbox"
var label = document.createElement('label')
label.appendChild(document.createTextNode(putin.value))
task_area.appendChild(input)
task_area.appendChild(label)
//document.getElementById("task_area").innerHTML = putin.value
})
clear.addEventListener("click", function () {
for (i = 0; i < task_area.children.length; i++) {
if (task_area.children[i].checked === true) {
tasks.children[i].nextSibling.remove();
tasks.children[i].remove();
}
}
})
</script>
</body>
Please let me know if any concern.
http://jsfiddle.net/rfnslyr/CRqXm/1/
I have the following fiddle which extracts CSS classes and ID's, and posts them to console. I want to type a name into the top box, paste some code, and have it generate a separate set of unique css ID's and classes into a new instance of the #classes instance (which has uin0CE + a bunch of classes in it).
I have that posting to console done, I just don't know how to "spawn" a new instance of the the #classes section on submit every time I add a new name to #codeName and code to #codeInput.
index.html
<div id="container">
<input id="codeName" class="boxsizingBorder"></input><br>
<textarea id="codeInput" class="boxsizingBorder"></textarea><br>
<button id="submitCode">submit</button>
<div id="classes">
<div class="pageTitle">uin0CE</div>
<div class="cssClassesIDs">
ui-icon-nodisc,redDotClass,translate,test,ui-hide-label,ui-grid-a,ui-block-a,ui-block-b,alignRight,ui-grid-solo,ui-disabled,companyFieldset,longbutton,icon-map-marker,locationIcon,icon-phone,contactIcon,legalBlock,legal,legalDivider,signInInfoIcon,icon-info-sign,ui-icon-alt
</div>
</div>
</div>
<script src="functions.js"></script>
functions.js
$(function() {
$('#submitCode').click(function() {
var CSS_CLASSES = [];
var CSS_IDS = [];
var el = document.createElement( 'div' );
var text = $("#codeInput").val();
el.innerHTML = text;
var nodes = el.getElementsByTagName('*');
for (var i = 0; i < nodes.length; i++) {
var node = nodes[i];
if (node.id.length > 0) {
CSS_IDS.push.apply(CSS_IDS, node.id.split(" "));
}
if (node.className.length > 0) {
CSS_CLASSES.push.apply(CSS_CLASSES, node.className.split(" "));
}
}
var uniqueNames = [];
$.each (CSS_CLASSES, function(i, el){
if($.inArray(el, uniqueNames) === -1) uniqueNames.push(el);
});
console.log(uniqueNames + " --- " + uniqueNames.length);
});
});
Edit: I added this to your fiddle:
//Added this section here
var name = $('#codeName').val();
var code = uniqueNames;
$('#classes').empty();
$('#classes').append('<div class="pageTitle">'+name+'</div>');
$('#classes').append('<div class="cssClassesIDs">'+code+'</div>');
Here's the updated fiddle: http://jsfiddle.net/CRqXm/4/
I'm hoping I'm following your question correctly, but this seems to be what you're looking for.
I want to create a list of clickable divs from arrays using Javascript, where the list structure has to be something like this:-
<div id="outerContainer">
<div id="listContainer">
<div id="listElement">
<div id="itemId"> </div>
<div id="itemTitle"> </div>
<div id="itemStatus"> </div>
</div>
<div id="listElement">
<div id="itemId"> </div>
<div id="itemTitle"> </div>
<div id="itemStatus"> </div>
</div>
</div>
</div>
I want to extract the values of itemId, itemTitle and itemStatus from three arrays itemIdData[ ], itemTitleData[ ] and itemStatusData[ ] respectively, to create the whole list.
Also, when I click on any of the listElements, I want an alert showing the itemId. Can anyone help me with this problem.
If you're using jQuery, then try something like this:
$("#listContainer").on("click", "div", function () {
console.log("jQuery Event Delegation");
alert($(this).find(">:first-child").attr("id"));
});
It's possible to write the same thing without jQuery, but will take further lines of code - I'm conveying the idea of delegation here (there are extensive existing docs and examples on the JQuery site, and here on this site).
NB: the code you're submitted in the question can't(shouldn't) have multiple DOM elements with same IDs (that's what classes are for - for semantically similar elements). Also, trying to emulate a list using divs instead of li elements is perhaps not best practice.
After a bit of experimentation, understood what I was doing wrong and how to get it done.
Here's the code:-
var listContainer = document.createElement("div");
document.getElementById("outerContainer").appendChild(listContainer);
for (var i = 0; i < json.length; i++) {
//create the element container and attach it to listContainer.
var listElement = document.createElement("div");
listElement.id = i;
listElement.className = "listItemContainer";
listElement.addEventListener("click", function(e){
var itemId = e.target.children[1].innerHTML;
alert(itemId);
});
listContainer.appendChild(listElement);
//create and attach the subchilds for listElement.
var itemTitle = document.createElement("span");
itemTitle.innerHTML = postTitleData[i];
itemTitle.id = 'title'+i;
itemTitle.className = "itemTitle";
listElement.appendChild(itemTitle);
var itemId = document.createElement("div");
itemId.innerHTML = postIdData[i];
itemId.id = 'id'+i;
itemId.className = "itemId";
listElement.appendChild(itemId);
var itemStatus = document.createElement("span");
itemStatus.innerHTML = postStatusData[i];
itemStatus.id = 'status'+i;
itemStatus.className = "itemStatus";
listElement.appendChild(itemStatus);
}
Tried something like this which isn't quite working!
var listContainer = document.createElement("div");
document.getElementById("outerContainer").appendChild(listContainer);
var listElement = document.createElement("div");
listContainer.appendChild(listElement);
listElement.className = "listItemContainer";
for (var i = 0; i < json.length; i++) {
var itemId = document.createElement("div");
itemId.innerHTML = idData[i];
listElement.appendChild(itemId);
itemId.className = "itemId";
var itemTitle = document.createElement("div");
itemTitle.innerHTML = titleData[i];
listElement.appendChild(itemTitle);
itemTitle.className = "itemTitle";
var itemStatus = document.createElement("div");
itemStatus.innerHTML = statusData[i];
listElement.appendChild(itemStatus);
itemStatus.className = "itemStatus";
listElement.appendChild(document.createElement("hr"));
var elementId = 'ListElement'+i;
listElement.id = elementId;
listElement.addEventListener("click", function(){
alert(document.getElementById(elementId).innerHTML);
});
}
I'm trying to create a dropdown list from an array on my overlay (div element) using javascript.
In this example,
spcodelist = [u'CA125', u'HCM112', u'HCM147', u'HCM97', u'HKI128', u'HKI158', u'HKS161', u'HKS231', u'TKA230']
Here are related lines of code:
var pcode_form = document.createElement('form');
div.appendChild(pcode_form);
var pcode_select = document.createElement('select');
pcode_form.appendChild(pcode_select);
var i = 0;
var spcodelist = document.getElementById('spcodelist').value;
spcodelist = spcodelist.replace("[","");
spcodelist = spcodelist.replace("]","");
var spcodearr = new Array();
spcodearr = spcodelist.split(', ');
for (i=0;i<=spcodearr.length;i++){
spcodearr[i] = spcodearr[i].replace(/u'/g,"");
spcodearr[i] = spcodearr[i].replace(/'/g,"");
var pcode_option = document.createElement('option');
pcode_option.text = spcodearr[i];
pcode_option.value = spcodearr[i];
pcode_select.appendChild(pcode_option);
}
With this code, the dropdown list works fine but code after it will not work any more. I don't know what's the problem? How can I solve it? Or is there any better solution? Thank you very much.
I don't know what you are doing wrong, but the following works fine and should work in any browser. I've added a remove button so you can add and remove the select as often as you like.
<script type="text/javascript">
function addSelect(id) {
var div = document.getElementById(id);
var pcode_form = document.createElement('form');
pcode_form.id = 'f0';
div.appendChild(pcode_form);
var pcode_select = document.createElement('select');
pcode_form.appendChild(pcode_select);
var spcodelist = document.getElementById('spcodelist').value;
// Do replaces in one go
spcodelist = spcodelist.replace(/[\[\]\'u ]/g,'');
var spcodearr = spcodelist.split(',');
for (var i=0, iLen=spcodearr.length; i<iLen; i++) {
pcode_select.options[i] = new Option(spcodearr[i],spcodearr[i]);
}
}
</script>
<button onclick="addSelect('d0');">Add select</button>
<button onclick="
var el = document.getElementById('f0');
el.parentNode.removeChild(el);
">Remove form</button>
<div id="d0"></div>
<textarea id="spcodelist" style="display:none">[u'CA125', u'HCM112', u'HCM147', u'HCM97', u'HKI128', u'HKI158', u'HKS161', u'HKS231', u'TKA230']</textarea>