How to change from document to "this" in javascript - javascript

I am trying to wrap my head around prototype in javascript as well as getting used to the value of this. Currently I have this set to .cf--modal but when I use this to set a variable it does not seem to work. As this is my first of many functions I really don't want to hit the document and would rather target "this" within the Modal Toggle function.
How can I change the modal_toggle function so that document.getElementById and document.getElementsByClassname can be replaced with this.find or something along those lines.
$(function(){
$('.cf--modal').each(function(){
let cf = new ContactForm($(this));
});
});
var ContactForm = function(this$obj){
this.$obj = this$obj;
this.init();
}
ContactForm.prototype.init = function init(){
this.modal_toggle();
};
ContactForm.prototype.modal_toggle = function modal_toggle(){
let cfCTA = document.getElementsByClassName("modal-trigger")[0];
let cfModal = document.getElementsByClassName("cf--modal")[0];
let cfModalClose = document.getElementsByClassName("close-cf-modal")[0];
cfCTA.onclick = function () {
cfModal.style.display = "block";
}
cfModalClose.onclick = function(){
cfModal.style.display = "none";
}
}
.cf{
width:1000px;
margin:40px auto;
}
.inner-container{
padding:12px 24px;
border:1px solid grey;
border-radius:5px;
display:flex;
align-items:center;
justify-content:center;
}
.cf-block{
flex:1
}
/* Modal Styling */
.cf--modal{
width:375px;
height:200px;
position:absolute;
right:36px;
bottom:0;
border:1px solid grey;
display:none;
}
.close-cf-modal{
cursor:pointer;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
Contact Us
<section class="cf">
<div class="cf-container">
<form>
<div class="inner-container">
<div class="cf-block">
<div class="cf-label">First Name</div>
</div>
<div class="cf-block">
<div class="cf-label">Last Name</div>
</div>
<div class="cf-block">
<div class="cf-label">Email</div>
</div>
<div class="cf-block">
<div class="cf-label">Message</div>
</div>
<div class="cf-block">
<div class="cf-label">Submit</div>
</div>
</div>
</form>
</div>
</section>
<section class="cf--modal">
<span class="close-cf-modal">close</span>
</section>


You should use this.$obj to refer to the modal element for the current ContactForm
ContactForm.prototype.modal_toggle = function modal_toggle() {
let cfModal = this.$obj;
let cfCTA = $(".modal-trigger");
let cfModalClose = cfModal.find(".close-cf-modal");
cfCTA.on("click", function() {
cfModal.show();
})
cfModalClose.on("click", function() {
cfModal.hide();
});
}

Related

how to check if it was the last element

how can I check if it was the last div? If it was I need to remove all classes "ready"
html:
<div class="green"></div>
<div class="orange"></div>
<div class="red"></div>
<div class="green"></div>
<div class="orange"></div>
js:
$(function() {
setInterval(showBlock, 1000);
function showBlock() {
var x = $("div:first").addClass("ready");
var c = $("div");
$(".ready").css("display", "block");
if (c.hasClass("ready")) {
$(".ready:last").next().addClass("ready");
}
}
})
;

Looking at your code what I understand is you want display one div after each second. For that I'll suggest following approach.
First add hidden class to all divs and then remove it from first hidden div at each second.
$(function() {
$('div').addClass('hidden');
var i = setInterval(showBlock, 1000);
function showBlock() {
var x = $("div.hidden:first").removeClass("hidden");
if($("div.hidden").length == 0) {
clearInterval(i);
}
}
});
.hidden {
display: none;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<div class="green">Green</div>
<div class="orange">Orange</div>
<div class="red">Red</div>
<div class="green">Green</div>
<div class="orange">Orange</div>

As far as I understand your problem, following solution must work in your case:
$(function() {
setInterval(showBlock, 1000);
function showBlock() {
var ready_divs = $("div.ready").length;
var total_divs = $("div").length;
if(ready_divs!=total_divs){
if(ready_divs==0){
$("div:first").addClass('ready');
}else{
$("div.ready:last").next('div').addClass('ready');
}
}else{
$("div").removeClass('ready')
}
}
});
div{
width: 20px;
height: 20px;
border:1px solid red;
}
div.ready{
border:3px solid blue;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<div class="green"></div>
<div class="orange"></div>
<div class="red"></div>
<div class="green"></div>
<div class="orange"></div>

Event listener hover changing other element

I made this script for showing/hiding other div that comes to place of the one with event (ricon1) on mouse in and out:
HTML:
<div class="rule-container">
<div class="rule" id="rule1">
<div class="rule-icon" id="ricon1">
</div>
<div class="rule-decription" id="rdescription1">
</div>
</div>
<div class="rule" id="rule2">
<div class="rule-icon" id="ricon2">
</div>
<div class="rule-decription" id="rdescription2">
</div>
</div>
<div class="rule" id="rule3">
<div class="rule-icon" id="ricon3">
</div>
<div class="rule-decription" id="rdescription3">
</div>
</div>
<div class="rule" id="rule4">
<div class="rule-icon" id="ricon4">
</div>
<div class="rule-decription" id="rdescription4">
</div>
</div>
</div>
CSS:
div.rule {
display: inline-block;
width:20%;
margin-left:2%;
margin-right:2%;
background-color: cadetblue;
}
div.rule:first-child {
margin-left:3.5%;
background-color:yellow;
}
div.rule > div {
width:100%;
}
div.rule-icon {
height:240px;
background-color:lightpink;
display:block;
}
div.rule-decription {
height: 240px;
background-color: springgreen;
display:none;
}
JS:
document.getElementById("ricon1").addEventListener("mouseenter",function (){
document.getElementById('ricon1').style.display = 'none';
document.getElementById('rdescription1').style.display = 'block';
});
document.getElementById("ricon1").addEventListener("mouseout",function (){
document.getElementById('ricon1').style.display = 'block';
document.getElementById('rdescription1').style.display = 'none';
});
But the problem is that it flashes (continuously switching between on and off state, what am i doing wrong ?
How may i change script so i dont have to do it for all pairs of divs (ricon1, rdescription1; ricon2, rdescription2... etc) because there is like 6 pairs?

Is there a specific reason you don't want to use jQuery for that?
Anyway, here's an example without jQuery:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
<div class = "switch">
<div class = "icon">A</div>
<div style = "display:none" class = "desc">Desc1</div>
</div>
<div class = "switch">
<div class = "icon">B</div>
<div style = "display:none" class = "desc">Desc2</div>
</div>
<div class = "switch">
<div class = "icon">C</div>
<div style = "display:none" class = "desc">Desc3</div>
</div>
<script>
var icons = document.querySelectorAll('.switch');
for (var i = 0; i < icons.length; i++) {
icons[i].addEventListener("mouseenter", function() {
(this.querySelectorAll(".icon")[0]).style.display = 'none';
(this.querySelectorAll(".desc")[0]).style.display = 'block';
});
icons[i].addEventListener("mouseleave", function() {
(this.querySelectorAll(".icon")[0]).style.display = 'block';
(this.querySelectorAll(".desc")[0]).style.display = 'none';
});
}
</script>
</body>
</html>

jquery keypress to add class

I am trying to learn jquery keypress to add class system.
I have tryed the following code but it doesn't worked. I have tryed with an ID here. When started the #ttt1 then the the #rb1 background color should change but nothing happened.
What i am doing wrong or what i need to do here? Anyone can tell me ?
This id DEMO from codemep.io
$(document).ready(function() {
var ID = $(this).attr("id");
$("#ttt" + ID).on('keypress', function() {
if ($(this).val().length > 20) {
$("#rb" + ID).addClass("ad");
} else {
$("#rb" + ID).removeClass("ad");
}
});
});
HTML
<div class="container">
<div class="tWrp">
<textarea class="test" id="ttt1" placeholder="Write"></textarea>
</div>
<div class="br" id="rb1">Button</div>
</div>
<div class="container">
<div class="tWrp">
<textarea class="test" id="ttt2" placeholder="Write"></textarea>
</div>
<div class="br" id="rb2">Button</div>
</div>

You are defining a variable ID inside a function which occurs on $(document).ready(). Inside that function the value this will point to the document. What you need to do is to define the variable inside the keypress event handler function.
Use class for selection and then use $(this).attr("id") inside the handler function. Also you can use $(this).closest('div').next() to get the next element in the parent.
DEMO
$(document).ready(function() {
//here value for this is the document object and the id is not useful.
$(".test").on('keyup', function() {
//but here value for this is textarea where keypress event happened.
var ID = this.id;
if (this.value.length > 20) {
$(this).closest('div').next().addClass("ad");
} else {
$(this).closest('div').next().removeClass("ad");
}
});
});
.container {
margin:0px auto;
width:100%;
max-width:500px;
position:relative;
margin-top:100px;
}
.test {
outline:none;
border:1px solid red;
width:100%;
min-height:100px;
}
.br {
background-color:blue;
width:100px;
height:40px;
}
.ad {
background-color:red;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
<div class="container">
<div class="tWrp">
<textarea class="test" id="ttt1" placeholder="Write"></textarea></div>
<div class="br" id="rb1">Button</div>
</div>
<div class="container">
<div class="tWrp">
<textarea class="test" id="ttt2" placeholder="Write"></textarea></div>
<div class="br" id="rb2">Button</div>
</div>

Setting background color of div on click

I have a set of dynamically generated div elements like:
<div on-click="selected">one</div>
<div on-click="selected">two</div>
<div on-click="selected">three</div>
<div on-click="selected">four</div>
<div on-click="selected">five</div>
<div on-click="selected">six</div>
<div on-click="selected">seven</div>
I want to change the background color of div on which it is clicked and lose it when another div is clicked.
I could achieve this using tabindex, but I want to retain it until I click it on the another div or clear it intentionally, which tabindex does not provide.
How can I acieve it using javascript?

<div class="radiodiv" onclick=selected(this)>one</div>
<div class="radiodiv" onclick=selected(this)>two</div>
<div class="radiodiv" onclick=selected(this)>three</div>
<div class="radiodiv" onclick=selected(this)>four</div>
<div class="radiodiv" onclick=selected(this)>five</div>
<div class="radiodiv" onclick=selected(this)>six</div>
<div class="radiodiv" onclick=selected(this)>seven</div>
<script>
var divItems = document.getElementsByClassName("radiodiv");
function selected(item) {
this.clear();
item.style.backgroundColor = 'red';
}
function clear() {
for(var i=0; i < divItems.length; i++) {
var item = divItems[i];
item.style.backgroundColor = 'white';
}
}
</script>

Put all Your 'divs' into one div which will be container.
Then, by js, loop trough them and set css for non-selected and different for selected.
code :
function sel(id) {
var divs=document.getElementById('container').getElementsByTagName('div'); //get all divs from div called container
for(var i=0;i<divs.length; i++) {
if(divs[i]!=id) { //if not selected div set .items css
divs[i].className='items';
}
}
id.className='selitem'; //set different css for selected one
}
/* css for non-selected div*/
.items
{
display:block;
width:200px;
background-color:white;
color:black;
cursor:pointer;
margin-bottom:5px;
}
.items:hover
{
background-color:blue;
color:white;
}
/* css for selected div*/
.selitem
{
display:block;
width:200px;
background-color:red;
color:yellow;
cursor:pointer;
margin-bottom:5px;
}
<div id="container">
<div class="items" onclick="sel(this)">one</div>
<div class="items" onclick="sel(this)">one</div>
<div class="items" onclick="sel(this)">one</div>
<div class="items" onclick="sel(this)">one</div>
<div class="items" onclick="sel(this)">one</div>
<div class="items" onclick="sel(this)">one</div>
<div class="items" onclick="sel(this)">one</div>
</div>
There is explanation in the code.

Try this:
<div onclick="selected(this)">one</div>
<div onclick="selected(this)">two</div>
<div onclick="selected(this)">three</div>
<div onclick="selected(this)">four</div>
<div onclick="selected(this)">five</div>
<div onclick="selected(this)">six</div>
<div onclick="selected(this)">seven</div>
<script>
function selected(element)
{
var divs=document.getElementsByTagName("div");
divs.forEach(function(i)
{
i.style.backgroundColor="auto";
});
element.style.backgroundColor="red";
}
</script>

FYI, without any loops.
var xxx = null;
function sel(element){
if(xxx != null){
xxx.className = "default";
}
element.className = "selected";
xxx = element;
}

The best way to do that, is called a function in JavaScript, onclick or another. In this function you can create your own code, try to change the CSS properties and you will change the background color.
One example that I created:
function onoverbut(elemento)
{
elemento.style.color= "silver";
elemento.style.fontSize= "25px";
}
name function: onoverbut
attribute: elemento, which is the class or id html, that you need to pass.

Could help me to resolve mouse events?

<script>
var theNumOfWins;
var part;
theNumOfWins = 0;
function openWindow(){
part = partOfWindow("outlayer",theNumOfWins,"section0");
setCSS(part.css,"-1","400px","400px","#65A8E8","relative","30px","30px","initial","none");
part = partOfWindow("headerOfWindow",theNumOfWins,part.id);
setCSS(part.css,"1","400px","25px","#65A8E8","relative","0px","0px","initial","none");
part = partOfWindow("zoneOfWindowPosition",theNumOfWins,part.id);
setCSS(part.css,"1","204px","22px","transparent","absolute","192px","4px","move","1px solid red");
document.getElementById("5").innerHTML = document.getElementById(part.id).attributes[2].value;
theNumOfWins++;
}
function partOfWindow(name,theNumOfWins,parent){
var id;
var css;
var idAndCSS;
var tag;
var att;
id = name + "Id" + theNumOfWins;
css = name + "CSS";
tag = document.createElement("div");
tag.setAttribute("id",id);
tag.setAttribute("class",css);
document.getElementById(parent).appendChild(tag);
idAndCSS = {
tag: tag,
id: id,
css: css
}
return idAndCSS;
}
function setCSS(className,zIndex,width,height,backgroundColor,position,left,top,cursor,border){
var i;
var cssPart;
cssPart = document.getElementsByClassName(className);
document.getElementById("1").innerHTML = cssPart.length;
document.getElementById("2").innerHTML = cssPart[0];
document.getElementById("3").innerHTML = cssPart[1];
document.getElementById("4").innerHTML = cssPart[2];
for(i=0; i < cssPart.length; i++){
cssPart[i].style.zIndex = zIndex;
cssPart[i].style.width = width;
cssPart[i].style.height = height;
cssPart[i].style.backgroundColor = backgroundColor;
cssPart[i].style.position = position;
cssPart[i].style.left = left;
cssPart[i].style.top = top;
cssPart[i].style.cursor = cursor;
cssPart[i].style.border = border;
}
}
</script>
Hi!!! I need help!!!
I made a object of "div".
and then I added one more "div" into first "div".
second "div" is a red box. You can see it when you click the "+"mark.
But, second "div" has mouse event, and the event does not work.
I want to change mouse cursor when cursor become on the red box.
Why does not the mouse event work?
My last purpose is to make window object.
And there will be a lot of mouse events.
I already made window object similar to this one. However, it also did not work.
How can I try mouse event?
This is my full source: https://drive.google.com/file/d/0B4p8lZSEMXcqZUdacVJyVlBiUWc/view?usp=sharing

This is a CSS issue. Your problem is here:
part = partOfWindow("outlayer",theNumOfWins,"section0");
setCSS(part.css,"-1","400px","400px","#65A8E8","relative","30px","30px","initial","none");
Specifically, where you set the z-index to -1, by doing so you place the div and everything contained in it under the active layer so to speak. As such the hover event doesn't propagate to your div. change this to 1 and the cursor will behave as expected.
var theNumOfWins;
var part;
theNumOfWins = 0;
function openWindow(){
part = partOfWindow("outlayer",theNumOfWins,"section0");
setCSS(part.css,"1","400px","400px","#65A8E8","relative","30px","30px","initial","none");
part = partOfWindow("headerOfWindow",theNumOfWins,part.id);
setCSS(part.css,"1","400px","25px","#65A8E8","relative","0px","0px","initial","none");
part = partOfWindow("zoneOfWindowPosition",theNumOfWins,part.id);
setCSS(part.css,"1","204px","22px","transparent","absolute","192px","4px","pointer","1px solid red");
document.getElementById("5").innerHTML = document.getElementById(part.id).attributes[1].value;
theNumOfWins++;
}
function partOfWindow(name,theNumOfWins,parent){
var id;
var css;
var idAndCSS;
var tag;
var att;
id = name + "Id" + theNumOfWins;
css = name + "CSS";
tag = document.createElement("div");
tag.setAttribute("id",id);
tag.setAttribute("class",css);
document.getElementById(parent).appendChild(tag);
idAndCSS = {
tag: tag,
id: id,
css: css
}
return idAndCSS;
}
function setCSS(className,zIndex,width,height,backgroundColor,position,left,top,cursor,border){
var i;
var cssPart;
cssPart = document.getElementsByClassName(className);
document.getElementById("1").innerHTML = cssPart.length;
document.getElementById("2").innerHTML = cssPart[0];
document.getElementById("3").innerHTML = cssPart[1];
document.getElementById("4").innerHTML = cssPart[2];
for(i=0; i < cssPart.length; i++){
cssPart[i].style.zIndex = zIndex;
cssPart[i].style.width = width;
cssPart[i].style.height = height;
cssPart[i].style.backgroundColor = backgroundColor;
cssPart[i].style.position = position;
cssPart[i].style.left = left;
cssPart[i].style.top = top;
cssPart[i].style.cursor = cursor;
cssPart[i].style.border = border;
}
}
#buttonToOpenWindow{
width:50px;
height:20px;
border: 1px solid #DCDCDC;
margin: 2px;
position:fixed;
left:-1px;
top:0px;
}
#buttonToOpenWindow div.positionOfPlus{
width:20px;
height:20px;
position:absolute;
left:30px;
}
div.wrapOfPlus{
width:20px;
height:20px;
}
div.inside01{
width:15px;
height:5px;
background-color: #B0C4DE;
position:absolute;
left:2.5px;
top:7.5px;
}
div.inside02{
width:5px;
height:15px;
background-color: #B0C4DE;
position:absolute;
left:7.5px;
top:2.5px;
}
<section id="section0">
<div id="buttonToOpenWindow" onclick="openWindow()">
<div class="positionOfPlus">
<div class="wrapOfPlus">
<div class="inside01"></div>
<div class="inside02"></div>
</div>
</div>
</div>
</section>
<footer>
<br><br><br><br><br>
<div style="display:inline-flex;">00: <div id="0"></div></div><br>
<div style="display:inline-flex;">01: <div id="1"></div></div><br>
<div style="display:inline-flex;">02: <div id="2"></div></div><br>
<div style="display:inline-flex;">03: <div id="3"></div></div><br>
<div style="display:inline-flex;">04: <div id="4"></div></div><br>
<div style="display:inline-flex;">05: <div id="5"></div></div><br>
<div style="display:inline-flex;">06: <div id="6"></div></div><br>
<div style="display:inline-flex;">07: <div id="7"></div></div><br>
<div style="display:inline-flex;">08: <div id="8"></div></div><br>
<div style="display:inline-flex;">09: <div id="9"></div></div><br>
<div style="display:inline-flex;">10: <div id="10"></div></div><br>
<div style="display:inline-flex;">11: <div id="11"></div></div><br>
<div style="display:inline-flex;">12: <div id="12"></div></div><br>
<div style="display:inline-flex;">13: <div id="13"></div></div><br>
<div style="display:inline-flex;">14: <div id="14"></div></div><br>
<div style="display:inline-flex;">15: <div id="15"></div></div><br>
<div style="display:inline-flex;">16: <div id="16"></div></div><br>
<div style="display:inline-flex;">17: <div id="17"></div></div><br>
<div style="display:inline-flex;">18: <div id="18"></div></div><br>
<div style="display:inline-flex;">19: <div id="19"></div></div><br>
<div style="display:inline-flex;">20: <div id="20"></div></div><br>
<div style="display:inline-flex;">21: <div id="21"></div></div><br>
<div style="display:inline-flex;">22: <div id="22"></div></div><br>
<div style="display:inline-flex;">23: <div id="23"></div></div><br>
<div style="display:inline-flex;">24: <div id="24"></div></div><br>
<div style="display:inline-flex;">25: <div id="25"></div></div><br>
<div style="display:inline-flex;">26: <div id="26"></div></div><br>
<div style="display:inline-flex;">27: <div id="27"></div></div><br>
<div style="display:inline-flex;">28: <div id="28"></div></div><br>
<div style="display:inline-flex;">29: <div id="29"></div></div><br>
<div style="display:inline-flex;">30: <div id="30"></div></div><br>
<div style="display:inline-flex;">111: <div id="111"></div></div><br>
<div style="display:inline-flex;">222: <div id="222"></div></div><br>
<div style="display:inline-flex;">333: <div id="333"></div></div><br>
<div style="display:inline-flex;">444: <div id="444"></div></div><br>
<div style="display:inline-flex;">555: <div id="555"></div></div><br>
<div style="display:inline-flex;">666: <div id="666"></div></div><br>
<div style="display:inline-flex;">777: <div id="777"></div></div><br>
<div style="display:inline-flex;">888: <div id="888"></div></div><br>
<div style="display:inline-flex;">999: <div id="999"></div></div><br>
</footer>

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