EDIT: I changed the var to class but I might have some error in here.
Here it goes, I want to have this paragraph in which the user can change the name on the following paragraph. The code I'm using only changes one name but the rest remains the same.
<script type="text/javascript">
function changey(){
var userInput = document.getElementById('userInput').value;
var list = document.getElementByClassName('kiddo');
for (let item of list) {
item.innerHTML = userInput;
}
}
</script>
<input id="userInput" type="text" value="Name of kid" />
<input onclick="changey()" type="button" value="Change Name" /><br>
Welcome to the site <b class="kiddo">dude</b> This is how you create a document that changes the name of the <b class="kiddo">dude</b>. If you want to say <b class="kiddo">dude</b> more times, you can!
No error messages, the code only changes one name instead of all three.
Use class="kiddo" instead of id in the html.
You can then use var kiddos = document.getElementsByClassName('kiddo') which will return an array of all the elements of that class name stored in kiddos.
Then you just need to loop through the values and change what you want.
Example of loop below:
for (var i = 0; i < kiddos.length; i++) {
kiddos[i].innerHTML = userInput;
}
id should be unique on the page. Javascript assumes that there is only one element with any given id. Instead, you should use a class. Then you can use getElementsByClassName() which returns an entire array of elements that you can iterate over and change. See Select ALL getElementsByClassName on a page without specifying [0] etc for an example.
Hello You should not use id, instead use class.
Welcome to the site <b class="kiddo">dude</b> This is how you create a document that changes the name of the <b class="kiddo">dude</b>. If you want to say <b class="kiddo">dude</b> more times, you can!
After That on Js part :
<script type="text/javascript">
function changey(){
var userInput = document.getElementById('userInput').value;
var list = document.getElementByClassName('kiddo');
for (let item of list) {
item.innerHTML = userInput;
}
}
</script>
you should use class instated of id. if you use id then the id [kiddo] must be unique
In short, document.querySelectorAll('.kiddo') OR
document.getElementsByClassName('kiddo') will get you a list of elements to loop through. Take note of querySelectorAll, though - it uses a CSS selector (note the dot) and doesn't technically return an array (you can still loop through it, though).
See the code below for some full working examples (const and arrow functions are similar to var and function, so I'll put up a version using old JavaScript, too):
const formEl = document.querySelector('.js-name-change-form')
const getNameEls = () => document.querySelectorAll('.js-name')
const useNameFromForm = (formEl) => {
const formData = new FormData(formEl)
const nameValue = formData.get('name')
const nameEls = getNameEls()
// Set the text of each name element
// NOTE: use .textContent instead of .innerHTML - it doesn't get parsed, so it's faster and less work
nameEls.forEach(el => el.textContent = nameValue)
}
// Handle form submit
formEl.addEventListener('submit', (e) => {
useNameFromForm(e.target)
e.preventDefault() // Prevent the default HTTP request
})
// Run at the start, too
useNameFromForm(formEl)
.name {
font-weight: bold;
}
<!-- Using a <form> + <button> (submit) here instead -->
<form class="js-name-change-form">
<input name="name" value="dude" placeholder="Name of kid" />
<button>Change Name</button>
<form>
<!-- NOTE: Updated to use js- for js hooks -->
<!-- NOTE: Changed kiddo/js-name to spans + name class to remove design details from the HTML -->
<p>
Welcome to the site, <span class="js-name name"></span>! This is how you create a document that changes the name of the <span class="js-name name"></span>. If you want to say <span class="js-name name"></span> more times, you can!
</p>
var formEl = document.querySelector('.js-name-change-form');
var getNameEls = function getNameEls() {
return document.querySelectorAll('.js-name');
};
var useNameFromForm = function useNameFromForm(formEl) {
var formData = new FormData(formEl);
var nameValue = formData.get('name');
var nameEls = getNameEls(); // Set the text of each name element
// NOTE: use .textContent instead of .innerHTML - it doesn't get parsed, so it's faster and less work
nameEls.forEach(function (el) {
return el.textContent = nameValue;
});
};
// Handle form submit
formEl.addEventListener('submit', function (e) {
useNameFromForm(e.target);
e.preventDefault(); // Prevent the default HTTP request
});
// Run at the start, too
useNameFromForm(formEl);
<button class="js-get-quote-btn">Get Quote</button>
<div class="js-selected-quote"><!-- Initially Empty --></div>
<!-- Template to clone -->
<template class="js-quote-template">
<div class="js-quote-root quote">
<h2 class="js-quote"></h2>
<h3 class="js-author"></h3>
</div>
</template>
You have done almost everything right except you caught only first tag with class="kiddo".Looking at your question, as you need to update all the values inside tags which have class="kiddo" you need to catch all those tags which have class="kiddo" using document.getElementsByClassName("kiddo") and looping over the list while setting the innerHTML of each loop element to the userInput.
See this link for examples:https://www.w3schools.com/jsref/met_document_getelementsbyclassname.asp
try:
document.querySelectorAll('.kiddo')
with
<b class="kiddo">dude</b>
Related
I am trying to create an extention which clicks on an item of the price given by the user. Here is the relevant popup.html:
<input style="display:none" /><input type="text" id="userInput" value='' />
<button id="clickme">Run</button>
When 'clickme' is clicked, it runs this popup.js:
document.getElementById('clickme').addEventListener('click', function() {
var price = '$'+ document.getElementById("userInput").value+".00";
alert(price);
$("p:contains("price")").parentNode.click();
});
If you type the desired price in in the form as 48, it returns an alert with the value $48.00.
It then shuold click on the item of that price, however this currently isn't working. Here is the code of the relevant part of the website which I am trying to run my extention on (not my website):
<div class="grid__item wide--one-fifth large--one-quarter medium-down--one-half">
<a href="/collections/1seventeenweek7/products/copy-of-supreme-dazzle-warm- up-top-red" class="grid-link text-center">
<p class="grid-link__title">Supreme Corner Cap Light Blue</p>
<p class="grid-link__meta">
<span class="visually-hidden">Regular price</span>
$48.00
</p>
</a>
</div>
I am trying to get it to search for the p element containing $48.00, and then click on the a element which is the parent element, but this is not currently working. What am I doing wrong? - thanks
Here you go. This will work!
document.getElementById('clickme').addEventListener('click', function() {
var price = '$'+document.getElementById('userInput').value+'.00'
var metas = document.getElementsByClassName('grid-link__meta')
alert(price)
for (let i = 0; i < metas.length; i++) {
if (metas[i].innerHTML.includes(price)) metas[i].parentNode.click()
break
}
})
Personally, I'd really like to use something like the following, yet I forgot that getElementsByClassName doesn't return an array, but rather a NodeList object.
var price = '$'+document.getElementById('userInput').value+'.00'
var metas = document.getElementsByClassName('grid-link__meta')
var match = metas.find((curr) => curr.innerHTML.includes(price))
match.parentNode.click()
I'm having trouble storing input values from <input> tag in HTML into array of strings, I can't figure out how am I suppose to do that. I have an idea on how that might look like, however I still can't get it to work.
I believe that I have to use .push() and .join() method and += or + operator, it's just I do not know where to put them.
The first thing I did was searching on Google How to store string value from input in an array of strings? but I only found on how to do it using <form> tag in HTML and I can't do that. I can't use the <form> tag.
Here's the code that I think should look like
<body>
<input type="text" id="input" />
<button onclick="submit()">Submit</button>
<div id="placeholder"></div>
</body>
var inputName = document.getElementById("input");
var cityArray = [""];
// This triggers immediately when the browser loads
window.onload = (
// Pickup the string from input and add it on the previously created array
function submit() {
inputName.value;
for (var i = 0; i < array.length; i++) {
array[i];
}
}
);
I also need a piece of code that will delete the value that was typed in a <input> field right after the Submit button is pressed, so that the user doesn't need to press Backspace in order to type the second input value.
Here is a working code snippet.
When you click the submit button, that will call the submit() function. Since your array is defined to be global, you can access it within the function. You do not need to iterate over the array, and you can simply use the .push() method to easily append a string to your array.
var inputName = document.getElementById("input");
var cityArray = [];
function submit() {
cityArray.push(inputName.value);
console.log(cityArray);
}
<body>
<input type="text" id="input" />
<button onclick="submit()">Submit</button>
<div id="placeholder"></div>
</body>
Hope this helps!
Yes you need to use .push() method it will add the new entered string to the array, without the need to iterate it:
function submit() {
cityArray.push(inputName.value);
}
And you need to initialize your array as an empty array with [] :
var cityArray = [];
And you don't need to create the submit function in the body.onload event handler because it won't be accessible outside of it and may lead for an error.
Demo:
var inputName = document.getElementById("input");
var cityArray = [];
function submit() {
cityArray.push(inputName.value);
console.log(cityArray);
}
<input type="text" id="input" />
<button onclick="submit()">Submit</button>
<div id="placeholder"></div>
Js Code
//declare your array like this
var yourArray = new Array();
//To add items to array:
yourArray.push(yourString);
//To get you can use indexing like(almost any other language)
yourArray[i]
//You can even set as an object array like this:
yourArray.push({
text: 'blablabla'
})
//So, in your case, filling up the array could be something like this:
var inputText = document.getElementById('input').value;
yourArray.push(inputText);
// show it
for (var i = 0; i < yourArray.length; i++) {
alert(yourArray[i]);
}
HTML Script
<body>
<input type="text" id="input" />
<button onclick="submit()">Submit</button>
<div id="placeholder"></div>
</body>
I'm making a meal planning / grocery list application with JavaScript and jQuery. Basically, this is how it works:
The user adds recipes through a form. The user enters the name of the recipe as well as the ingredients associated with that recipe.
When submitted, each recipe is stored in a <dl id="recipeList"> element. The name of the recipe is stored as a <dt class="recipe"> and each ingredient is stored as a <dd class="ingredient">.
For each day of the week, the user may click on a "Plan a Meal" anchor. This brings up a copy of the #recipeList. When the user clicks on a <dt>, a class="meal" is applied to it and the rest of the list is removed.
The next step is for the user to click on the "Generate Grocery List" anchor. When the user does this, JavaScript should loop through each .meal and create an array, #mealsArray. JavaScript should then loop through each class="recipe" and check to see if the .innerHTML of it matches an item in the #mealsArray. It does this just fine, but the problem is after a match is found, it should get the children of the class="recipe" (i.e., the <dt class="ingredient">) and push them into #groceriesArray.
JavaScript will not find the children of the <dt class="recipe">. I have tried numerous ways of coding this, such as:
this.children
this.childNodes
this.children()
this.children("dt")
this.children(".ingredient")
this.contents()
this.find(".ingredient")
It usually finds something strange like [Object HTMLElement] or returns an error message like Type Error: this.children() is not a function.
It seems like this so be so simple, but I have no idea what to do. I will provide my code below — apologies for how sloppy it is.
Here is the HTML:
<form id="addRecipeForm">
<label>Name</label><input type="text" id="recipeName">
<label>Ingredients</label><input type="text" class="recipeIngredients">
<label>Ingredients</label><input type="text" class="recipeIngredients">
<label>Ingredients</label><input type="text" class="recipeIngredients">
<button id="recipeButton">Add Recipe</button>
</form>
<dl id="recipeList"></dl>
<div>
<h3>Sunday</h3>
Plan a Meal
</div>
<div>
<h3>Monday</h3>
Plan a Meal
</div>
<!-- And so on, until Saturday -->
Generate Grocery List
<ul id="groceryList"></ul>
Here is the JavaScript:
var recipeList = $("#recipeList");
var recipeIngredients = $(".recipeIngredients");
var planAnchor = $(".planAnchor");
var groceryListAnchor = $("#groceryListAnchor");
var groceryList = $("#groceryList");
////////// ADD A RECIPE //////////
$("#recipeButton").click(function(e) {
e.preventDefault();
var recipeName = $("#recipeName").val();
var recipeIngredients = $(".recipeIngredients");
recipeList.append("<dt class='recipe'></dt>");
recipeList.children("dt").last().text(recipeName);
for (i = 0; i < recipeIngredients.length ; i++) {
$("<dd class='ingredient'></dd>").text(recipeIngredients[i].value).appendTo(recipeList);
};
});
////////// PLAN A MEAL //////////
planAnchor.click(function(e) {
e.preventDefault();
var dayInPlanning = $(this).parent("div");
var availableRecipes = recipeList.clone();
availableRecipes.children("dd").remove();
availableRecipes.attr("id", "availableRecipes");
$(this).parent("div").append(availableRecipes);
$(this).remove();
availableRecipes.children("dt").click(function(e) {
e.preventDefault();
var selectedRecipe = $(this);
var para = $("<p class='meal'></p>");
para.appendTo(dayInPlanning);
para.text(selectedRecipe.text());
availableRecipes.remove();
});
////////// GENERATE GROCERY LIST //////////
///////// THIS IS WHERE THE PROBLEM LIES //////////
groceryListAnchor.click(function(e) {
e.preventDefault();
var mealsArray = [];
var groceriesArray = [];
// Create an array of .meal elements
$(".meal").each(function() {
mealsArray.push(this.innerHTML);
});
console.log("mealsArray is " + mealsArray);
$(".recipe").each(function() {
console.log("Checking " + this.innerHTML);
// Match the innerHTML of each .recipe to the items in the mealsArray
if ($.inArray(this.innerHTML, mealsArray) > -1) {
console.log("We found " + this.innerHTML + " in the array!");
// Get the children of that recipe, and place them in groceriesArray
// *** Not Working ***
groceriesArray.push(this.children.innerHTML)
} else {};
});
console.log("The grocery list is " + groceriesArray);
});
To explain this simply. They're two types of elements jQuery Elements and JavaScript Elements. this is a JavaScript element. jQuery functions only work with jQuery Elements. So to make it work, use:
$(this).myjQueryFunction();
so for you:
$(this).children();
In depth
When creating jQuery elements using $(), it does a few things. jQuery uses Sizzle for selecting elements. If what's passed into $() is already an element. It doesn't do anything. Of it is, it will turn it into an element. Depending on which of the two jQuery uses. It will return an element. This is a regular JavaScript element but what makes it so special? The jQuery functions can only be run after $. The reason is how you create chained-JavaScript functions using prototype:
//Kind of how it's created
$.prototype.children = function () {
//jQuery's code to get children
}
This is making it so children() can only be run off of $.
Can you try cast this Dom Element as a jQuery Element:
//so instead of this.children() use
$(this).children()
and in this case if you want HTML it will be
$(this).children().html()
but it will get you first child HTML only, you can try the followng to get for all:
html_contents = ""
$.each($(this).children(), function(){
html_contents+=$(this).html();
});
I am trying to create a real-world example of get and set data attribute.
so I created a simple div that contains the data-email attribute and set a default one.
Now what I want to attain is when I click on the button it will change the default attribute to the set attribute on my JavaScript codes.
Currently I also don't know how can I show the data attribute value inside tag of my div.
here's my markup:
<div id="my-id" data-email="youremail#email.com">Sam's email is <span> "Show Email Here" </span> </div>
<button type="button" id="btn-id" onclick="click-btn()">Set Attribute Now</button>
here's my JavaScript:
var email = document.getElementById('my-id');
var emailget = email.getAttribute('data-email');
var button = document.getElementById('btn-id');
function click-btn(){
emailset = email.setAttribute('data-email', newemail#email.com);
}
here's the JSFIDDLE link: http://jsfiddle.net/jypb2jdg/6/
Any idea?
As #adeneo suggested we should not use hyphen in function name as it may be interpreted as minus sign, so remove and you may use like this:
You need to use quote in setAttribute value:
function clickBtn(){
emailset = email.setAttribute('data-email', 'newemail#email.com');
//^^ here ^^
}
You need something like this:
function clickBtn(){
emailset = email.setAttribute('data-email',
email.getAttribute('data-email') || 'newemail#email.com');
}
First thing is that the email you've written must be within quotes.
<div id="my-id" data-email="youremail#email.com">Sam's email is <span id="my-span-id"> "Show Email Here" </span> </div>
<button type="button" id="btn-id" onclick="click_btn()">Set Attribute Now</button>
The JS code:
function click_btn(){
var email = document.getElementById('my-id');
var emailContainer = document.getElementById("my-span-id");
var emailget = email.getAttribute('data-email');
emailContainer.innerText = emailget;
emailset = email.setAttribute('data-email', "newemail#email.com");
}
The code can be found in:
http://jsfiddle.net/jypb2jdg/17/
Some point I want to mention:
Include the JS before the div. Because button will not recognize click_btn() function before its declaration;
Do not use '-' symbol for function names in JS.
You could write a script without using ID for span. It will need additional structs (finding child elements, figuring out which one is what you need, set its' innertext.
You need to keep in mind that functions in javascript cannot have hyphens in their name as it is treated as a mathematical operator. Rest is just plain DOM manipulation :
<div id='my-id' data-email="youremail#email.com">Sam's email is <span id="mail"> "Show Email Here" </span>
</div>
<button type="button" id="btn-id" onclick="clickbtn()">Set Attribute Now</button>
jS:
var em;
window.onload = function(){
em = document.getElementById("my-id");
document.getElementById("mail").innerHTML = em.getAttribute("data-email");
};
function clickbtn(){
var old_mail = em.getAttribute("data-email");
em.setAttribute("data-email","newmail");
document.getElementById("mail").innerHTML = em.getAttribute("data-email");
}
Fiddle : http://jsfiddle.net/dndnqygL/4/
Note : instead of assigning a new id to the span you can also use the element.firstChild property to set the innerHTML.
I have a long page with identical section I am attempting to combine into one that has:
TITLE
description
form
I have working mouseovers that change the title and description, but need a solution to change the value of a hidden form input to the new titles when changed.
HOW do I get the hidden form value to change onmouseover to equal current TITLE.value?
Milestones
PHP
function changeContent(id, msg) {
var el = document.getElementById(id);
if (id) {
el.innerHTML = msg;
}
}
FORM
<input type="hidden" value="" name="category" />
Is this what you're looking for?
document.getElementById('hiddenInputId').value = msg;
Your hidden element doesn't have an Id, so you can use following:
var elems = document.getElementsByName('category');
elems[0].value = <<new value>>
getElementsByName always returns an array so you have to pickup first element and set its value.
Cheers !!