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How to check if all the input values are equal to my data?

I have 32 items in my array, all of them have these properties: id, word, image. User has to guess what's in all the images and write their guess in inputs (so 32 inputs in total). I need to check if the input equals my arrays property "word" and then when clicked a button (type submit, all my pic's and inputs are in a form) display some text for example "Oops! Guess again" if wrong and "Yay! You got it correctly" if right. The text should appear below every input. I displayed all the pictures and inputs with a forEach, and i'm using bulma framework for this page:
const wordBox = info.forEach((words) => {
mainColumns.innerHTML += `
<div class="column is-one-quarter">
<div class="card">
<div class="card-image">
<figure class="image is-4by3">
<img src=${words.image} alt="Placeholder image">
</figure>
</div>
<div class="card-content">
<div class="media">
<div class="media-content">
<input class="input" id="text" type="text" placeholder="Įvesk žodį">
</div>
</div>
<div class="content">
Content
</div>
</div>
</div>
</div>`;
});
Any ideas?
This is how it should look like (the result should appear in content place)

Something like this
I use change instead of a button click
const info = [
{word:"flower",image:"flower.gif"},
{word:"boat",image:"boat.gif"}
];
const mainColumns = document.getElementById("mainColumns");
mainColumns.innerHTML = info.map(({image,word}) =>
`<div class="column is-one-quarter">
<div class="card">
<div class="card-image">
<figure class="image is-4by3">
<img src=${image} alt="Placeholder image">
</figure>
</div>
<div class="card-content">
<div class="media">
<div class="media-content">
<input class="input" data-word="${word}" type="text" placeholder="Įvesk žodį">
<span class="correct hide">Yay</span>
<span class="wrong hide">NOO</span>
</div>
</div>
<div class="content">
Content
</div>
</div>
</div>
</div>`).join("");
mainColumns.addEventListener("change",function(e) {
const correct = [...mainColumns.querySelectorAll("[data-word]")].map(input => {
if (input.value) {
const correct = input.value === input.dataset.word;
parent = input.closest("div");
parent.querySelector(".correct").classList.toggle("hide",!correct)
parent.querySelector(".wrong").classList.toggle("hide",correct);
return correct ? 1 : 0;
}
else return 0;
}).reduce((a,b)=>a+b);
document.getElementById("correct").innerText = correct;
})
#mainColumns { display:flex; }
.hide { display: none; }
<div id="mainColumns"></div>
Correct: <span id="correct"></span>

What you can do is to filter the word array with word from the input value. Then check if the length is equal zero, No match, if the length is greater than one, then there is a match.
const status = wordBox.filter(item => item.word === inputWord)

I'd move towards keeping the objects and the HTML separate, binding the HTML to the object and vice versa. This means including a couple more properties to your array elements.
let info = [{
image: 'flower.png',
word: 'flower',
content: '',
guess: ''
}];
function bindWords() {
info.forEach((words) => {
mainColumns.innerHTML = `
<div class="column is-one-quarter">
<div class="card">
<div class="card-image">
<figure class="image is-4by3">
<img src=${words.image} alt="Placeholder image">
</figure>
</div>
<div class="card-content">
<div class="media">
<div class="media-content">
<input class="input" data-word="${words.word}" type="text" placeholder="Įvesk žodį" value="${words.guess}">
</div>
</div>
<div class="content">
${words.content}
</div>
</div>
</div>
</div>`;
});
}
bindWords();
check.addEventListener('click', () => {
info = Array.from(document.querySelectorAll('.card')).map(el => ({
image: el.querySelector('img').src,
word: el.querySelector('.input').dataset.word,
guess: el.querySelector('.input').value,
content: el.querySelector('.input').value === el.querySelector('.input').dataset.word ?
'Correct' : 'Incorrect'
}));
bindWords();
});
<div id="mainColumns"></div>
<button id="check">Check Answers</button>

How to add divs with some classess to another div (inside each other) in html / javascript

I want to list my products from database by clicking on category in html/view.
Firstly I created it in HTML (static) just to check how this is going to look, and it looks lik this:
Here is my html:
<div class="col-md-8" style="margin-top: -15px;">
<div class="products row">
<div class="col-md-3">
<div class="product-holder">
<img class="img-responsive" src="images/coke.png">
<p class="product-title">
Product no1
</p>
</div>
</div>
<div class="col-md-3">
<div class="product-holder">
<img class="img-responsive" src="images/pepsi.png">
<p class="product-title">
Product no2
</p>
</div>
</div>
<div class="col-md-3">
<div class="product-holder">
<img class="img-responsive" src="images/coffe.png">
<p class="product-title">
Product no3
</p>
</div>
</div>
</div>
</div>
And now I want to create this block dynamically:
<div class="col-md-3">
<div class="product-holder">
<img class="img-responsive" src="images/coffe.png">
<p class="product-title">
Product no N
</p>
</div>
</div>
Here is what I've tried so far:
<script>
function onSelectGroup(Id) {
$.ajax({
method: "GET",
url: "Products/GetProductsByCategoryId",
data: { categoryId: Id }
})
.done(function (response) {
//In response I am getting my products, looping through them to create divs like in code above
for (var i = 0; i < response.length; i++) {
//<div class="col-md-3">
// <div class="article-holder">
// <img class="img-responsive" src="images/picture_not_available_400-300.png">
// <p class="product-title">
// Product no 1
// </p>
// </div>
// </div>
//Trying to append it to my .product class because it's parent of this divs above
$(".products").append('<div class="col-md-3"></div>');
$(".products).appendChild('<div class="article-holder"></div>');
}
})};
</script>
But this is not working unfortunatelly... I tried few another things, but this appendings are not working as expected :/
Thanks guys for any help
Cheers

There are many answers posted for the question which might solve the issue with the javascript code. I am posting a different approach as OP specifically requested for it in the comments.
At times, i do not like to build complex HTML markup in javascript with jQuery ( i afraid i might make typos (missing "" or ' etc..). In that case, i would like to have my action method return a view result (the HTML markup) as the response of my ajax call and i can simply update the DOM with that as needed.
public ActionResult GetProductsByCategoryId(int categoryId)
{
var p = db.Products.Where(a=>a.CategoryId==categoryId).ToList();
return PartialView("ProductList",p);
}
Now i will have a partial view called ProductList.cshtml, which is strongly typed to a list of products and i can loop through the items passed to it and render whatever markup i want.
Here is a simple example where i am rendering a div with css class col-md-3 for each item in the collection passed to it. You can update it to render whatever markup you want to render.
#model List<Product>
#foreach (var item in Model)
{
<div class="col-md-3">
<div class="product-holder">
<img class="img-responsive" src="#item.ImageUrl">
<p class="product-title">
#item.Name
</p>
</div>
</div>
}
Now all i have to do is, call this action method, and use the response to update my DOM. Let's give an Id to the container div which we will update
<div class="col-md-8" >
<div id="product-list" class="products row">
</div>
</div>
Now when the ajax call receives a response from server, update the inner html of the DOM element with Id product-list
$.ajax({
method: "GET",
url: "#Url.Action("GetProductsByCategoryId","Products")",
data: { categoryId: 2345 }
})
.done(function(response) {
$("#product-list").html(response);
}).fail(function(a, a, e) {
alert(e);
});
Keep in mind that, now you are getting a bigger payload (the resulting HTML)
from the server compared to the JSON data. So use this approach as you feel appropriate to do so. With this approach, i can use the C# methods in my partial view (For example, to build the path to an image in a location/ use Html helper methods etc)

I you create the dom element like any string, and append it to the container
function onSelectGroup(Id) {
//In response I am getting my products, looping through them to create divs like in code above
for (var i = 0; i <10; i++) {
let item = `<div class="col-md-3">
<div class="article-holder">
<img class="img-responsive" src="images/picture_not_available_400-300.png">
<p class="product-title">
Product no ${i}
</p>
</div>
</div>`
//Trying to append it to my .product class because it's parent of this divs above
$(".products").append(item);
}
};
onSelectGroup();
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="col-md-8" style="margin-top: -15px;">
<div class="products row">
<div class="col-md-3">
<div class="product-holder">
<img class="img-responsive" src="images/coke.png">
<p class="product-title">
Product no1
</p>
</div>
</div>
<div class="col-md-3">
<div class="product-holder">
<img class="img-responsive" src="images/pepsi.png">
<p class="product-title">
Product no2
</p>
</div>
</div>
<div class="col-md-3">
<div class="product-holder">
<img class="img-responsive" src="images/coffe.png">
<p class="product-title">
Product no3
</p>
</div>
</div>
</div>
</div>

You can create a new element with jquery and fill it properly
for (var i = 0; i < response.length; i++) {
//<div class="col-md-3">
// <div class="article-holder">
// <img class="img-responsive" src="images/picture_not_available_400-300.png">
// <p class="product-title">
// Product no 1
// </p>
// </div>
// </div>
//Trying to append it to my .product class because it's parent of this divs above
var newelem = $('<div class="col-md-3"></div>');
var artholder = $('<div class="article-holder"></div>');
newelem.append(artholder);
artholder.append(<your-image><your article title>);
}

You was close; all you needed to do was create an element for each item in the results object. I've used test data in the example.
https://jsfiddle.net/tw0vrpyy/
var response = {
item1: {
id: "id1",
title: "title1",
img: "img_src1.jpg"
},
item2: {
id: "id2",
title: "title2",
img: "img_src2.jpg"
}
};
var product = document.getElementsByClassName('response')[0];
Object.keys(response).forEach(function(key) {
var el = '<div class="col-md-3">' +
'<div class="article-holder">' +
'<img class="img-responsive" src="'+ response[key].img +'">' +
'<p class="product-title">' +
response[key].title +
'</p>' +
'</div>' +
'</div>';
product.innerHTML += el;
});

Javascript doesn't toggle the display of an element

So, I'm trying to obtain multiple slideshows on my website.
I have done almost everything, excepting the fact that when I press a picture, the modal of previews is showing, but the clicked image is not showing up. I have to use the buttons of the slideshow to go through them and make the first one to appear.
**
If you don't want to go along this whole code, here you can see what's happening: http://beta.eduardstefan.com
**
I am not trying to promote myself, I just think that I am not quite easy to understand without the example
So, my question, how can I make the first picture to show up when I press one, or why it's not happening, what is bad with my code?
My html:
<div class="portfolio-slideshow">
<a class="prev" onclick="slide(0,-1)">❮</a>
<div class="slide"> <img src="img/dailyui/008.png" class="slideimg_0" id="0" data-no="0"> </div>
<div class="slide"> <img src="img/dailyui/007.jpg" class="slideimg_0" id="1" data-no="0"> </div>
<div class="slide"> <img src="img/dailyui/006.jpg" class="slideimg_0" id="2" data-no="0"> </div>
<div class="slide"> <img src="img/dailyui/003.jpg" class="slideimg_0" id="3" data-no="0"> </div>
<a class="next" onclick="slide(0,1)">❯</a>
</div>
<div class="portfolio-slideshow">
<a class="prev" onclick="slide(2,-1)">❮</a>
<div class="slide"> <img src="img/dailyui/008.png" class="slideimg_2" id="0" data-no="2"> </div>
<div class="slide"> <img src="img/dailyui/007.jpg" class="slideimg_2" id="1" data-no="2"> </div>
<div class="slide"> <img src="img/dailyui/006.jpg" class="slideimg_2" id="2" data-no="2"> </div>
<div class="slide"> <img src="img/dailyui/003.jpg" class="slideimg_2" id="3" data-no="2"> </div>
<a class="next" onclick="slide(2,1)">❯</a>
</div>
<div class="imgpreview">
<i class="fa fa-close" onclick="closepreview()"></i>
<div class="slidepreview no_0">
<a class="prev" onclick="slide(1,-1)">❮</a>
<div class="slidep"> <img src="img/dailyui/008.png" class="slideimg_1" id="0"> </div>
<div class="slidep"> <img src="img/dailyui/007.jpg" class="slideimg_1" id="1"> </div>
<div class="slidep"> <img src="img/dailyui/006.jpg" class="slideimg_1" id="2"> </div>
<div class="slidep"> <img src="img/dailyui/003.jpg" class="slideimg_1" id="3"> </div>
<a class="next" onclick="slide(1,1)">❯</a>
</div>
<div class="slidepreview no_2">
<a class="prev" onclick="slide(3,-1)">❮</a>
<div class="slidep"> <img src="img/dailyui/008.png" class="slideimg_3" id="0"> </div>
<div class="slidep"> <img src="img/dailyui/007.jpg" class="slideimg_3" id="1"> </div>
<div class="slidep"> <img src="img/dailyui/006.jpg" class="slideimg_3" id="2"> </div>
<div class="slidep"> <img src="img/dailyui/003.jpg" class="slideimg_3" id="3"> </div>
<a class="next" onclick="slide(3,1)">❯</a>
</div>
</div>
SCSS:
.portfolio-slideshow{
width: 30%;
display: flex;
justify-content: space-between;
align-items: center;
}
.slide{
padding:0 35px;
display: block;
img{
display: none;
max-height:40vh;
max-width:100%;
}
}
.prev,.next{
display: flex;
align-items: center;
justify-content: center;
}
.imgpreview{
display: none;
position: fixed;
top: 0;
left: 0;
width: 100vw;
height: 100vh;
background: rgba(0,0,0,0.9);
justify-content: center;
align-items: center;
padding: 50px;
}
.slidepreview{
display: none;
align-items: center;
justify-content: center;
.slidep{
display: block;
img{
display: none;
max-height: 85vh;
max-width: 85vw;
}
}
And Javascript:
var slideIndex = [0,0,0,0,0,0,0,0]
function showSlides(){
var aux = slideIndex.length;
var i;
for(i=0; i<aux; i+=2) { slide(i,0); }
}
function slide(n,m){
var i;
var aux = document.getElementsByClassName("slideimg_" + n);
var aux2 = aux.length - 1;
if (slideIndex[n] == 3 && m == 1) slideIndex[n] = -1;
if (slideIndex[n] == 0 && m == -1) slideIndex[n] = 4;
slideIndex[n] += m;
if (slideIndex[n] < 0) slideIndex = aux2;
else if (slideIndex[n] > aux2) slideIndex = 0;
for(i=0; i<aux.length; i++){
aux[i].style.display = "none";
aux[i].parentElement.style.display = 'none';
}
aux[slideIndex[n]].style.display = "block";
aux[slideIndex[n]].parentElement.style.display = 'block';
}
function closepreview(){
$('.imgpreview').css("display" , "none");
$('.slidepreview').css("display" , "none")
}
$(document).ready(function() {
$(".slide img").click(function(){
var id = $(this).attr('id');
var no = $(this).attr('data-no');
var no2 = no + 1;
$(".imgpreview").css("display" , "flex");
$(".no_" + no).css("display" , "flex");
$("img#" + id + ".slideimg_" + no2).css("display" , "block");
slideIndex[no2] = id;
});
}).resize();

The IDs must be unique.
Instead of inline event handlers I would suggest to attach them to the js code (separate html from js code).
I removed all IDs and I changed everything in jQuery using:
.index()
.toggle( display )
.nextAll(), .next(), .prev() and .prevAll()
I used a class: active. This class is used to mark the current active element. Moreover, every time I need to move next or prev I move this class to the corresponding element. This class takes track of which img must be shown.
The snippet:
$(document).ready(function() {
//
// Toggle visibility
//
$('.slide:not(.active), .slide:not(.active) img').toggle(false);
$('.slide.active, .slide.active img').toggle(true);
//
// closing preview....
//
$('.imgpreview .fa.fa-close').on('click', function(e) {
$('.imgpreview, .slidepreview').css("display" , "none");
//
// ...remove active class and toggle visibility
//
$('.imgpreview, .slidepreview').find('.active, .active img').toggleClass(false).removeClass('active');
});
//
// on prev....
//
$(".prev").on('click', function(e) {
//
// get the active element and so the previous one
//
var active = $(this).nextAll('.slide.active');
var prev = active.prev('.slide');
if (prev.length == 0) {
//
// if at the beginning take the last one
//
prev = $(this).nextAll('.slide').last();
}
//
// move active class and toggle visibility
//
active.removeClass('active');
prev.addClass('active').find('img').andSelf().toggle(true);
$('.slide:not(.active), .slide:not(.active) img').toggle(false);
});
$(".next").on('click', function(e) {
//
// get the active element and so the next one
//
var active = $(this).prevAll('.slide.active');
var next = active.next('.slide');
if (next.length == 0) {
//
// if at the end take the first one
//
next = $(this).prevAll('.slide').last();
}
//
// move active class and toggle visibility
//
active.removeClass('active');
next.addClass('active').find('img').andSelf().toggle(true);
$('.slide:not(.active), .slide:not(.active) img').toggle(false);
});
$(".slide img").on('click', function(e) {
//
// take the index of curr element in the parent element
//
var idx = $(this).closest('div.slide').index();
var no = $(this).data('no');
$('.imgpreview, .no_' + no).css('display' , 'flex');
$('.no_' + no).children().eq(idx).addClass('active');
$('.no_' + no).find('.slide:not(.active), .slide:not(.active) img').toggle(false);
$('.no_' + no).find('.slide.active, .slide.active img').toggle(true);
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<link rel="stylesheet" href="http://beta.eduardstefan.com/css/style.css">
<link rel="stylesheet" href="http://beta.eduardstefan.com/css/font-awesome.css">
<div class="portfolio-slideshow">
<a class="prev">❮</a>
<div class="slide active"> <img src="http://beta.eduardstefan.com/img/dailyui/008.png" class="slideimg_0" data-no="0"></div>
<div class="slide"> <img src="http://beta.eduardstefan.com/img/dailyui/007.jpg" class="slideimg_0" data-no="0"></div>
<div class="slide"> <img src="http://beta.eduardstefan.com/img/dailyui/006.jpg" class="slideimg_0" data-no="0"></div>
<div class="slide"> <img src="http://beta.eduardstefan.com/img/dailyui/003.jpg" class="slideimg_0" data-no="0"></div>
<a class="next">❯</a>
</div>
<div class="portfolio-slideshow">
<a class="prev">❮</a>
<div class="slide active"> <img src="http://beta.eduardstefan.com/img/dailyui/008.png" class="slideimg_2" data-no="2"></div>
<div class="slide"> <img src="http://beta.eduardstefan.com/img/dailyui/007.jpg" class="slideimg_2" data-no="2"></div>
<div class="slide"> <img src="http://beta.eduardstefan.com/img/dailyui/006.jpg" class="slideimg_2" data-no="2"> </div>
<div class="slide"> <img src="http://beta.eduardstefan.com/img/dailyui/003.jpg" class="slideimg_2" data-no="2"></div>
<a class="next">❯</a>
</div>
<div class="imgpreview">
<i class="fa fa-close"></i>
<div class="slidepreview no_0">
<a class="prev" onclick="slide(1,-1)">❮</a>
<div class="slide"> <img src="http://beta.eduardstefan.com/img/dailyui/008.png" class="slideimg_1"></div>
<div class="slide"> <img src="http://beta.eduardstefan.com/img/dailyui/007.jpg" class="slideimg_1"></div>
<div class="slide"> <img src="http://beta.eduardstefan.com/img/dailyui/006.jpg" class="slideimg_1"></div>
<div class="slide"> <img src="http://beta.eduardstefan.com/img/dailyui/003.jpg" class="slideimg_1"></div>
<a class="next">❯</a>
</div>
<div class="slidepreview no_2">
<a class="prev">❮</a>
<div class="slide"> <img src="http://beta.eduardstefan.com/img/dailyui/008.png" class="slideimg_3"></div>
<div class="slide"> <img src="http://beta.eduardstefan.com/img/dailyui/007.jpg" class="slideimg_3"></div>
<div class="slide"> <img src="http://beta.eduardstefan.com/img/dailyui/006.jpg" class="slideimg_3"></div>
<div class="slide"> <img src="http://beta.eduardstefan.com/img/dailyui/003.jpg" class="slideimg_3"></div>
<a class="next">❯</a>
</div>
</div>

At least one problem is here:
var no = $(this).attr('data-no');
var no2 = no + 1;
no is a string so if no is "0", then no + 1 is "01", so instead you can do this:
var no = $(this).attr('data-no');
var no2 = Number(no) + 1;
https://codepen.io/anon/pen/MmwdZb?editors=1111
Beyond that, why re-invent the wheel? There are plenty of good slideshow plugins available.

Is it possible to remove size from the end a responsive image path?

I want to remove the -500x500 part from the image so that I can show the actual image.
Here's the complete HTML if anybody wants to take a look:
<div id="speakers_list1" class="wpb_row vc_row mk-fullwidth-false attched-false vc_row-fluid js-master-row mk-in-viewport">
<div style="" class="vc_col-sm-12 wpb_column column_container _ height-full">
<div id="box-14" class="mk-employees a_margin-bottom-10 a_margin-top-10 four-column u6col u5col o0col o1col o2col o3col mk-employees-grayscale classic c_cs ">
<ul>
<li class="mk-employee-item a_colitem a_align-center a_display-inline-block a_float-left m_7">
<div class="item-holder">
<div class="team-thumbnail a_position-relative a_width-100-per a_height-100-per a_overflow-hidden rounded-true">
<a href="http://developer.designprowebsolutions.com/sufi-intensive/team/imam-abdoulaye-ndaw/">
<img alt="Imam Abdoulaye Ndaw" title="Imam Abdoulaye Ndaw" src="http://developer.designprowebsolutions.com/sufi-intensive/wp-content/uploads/2017/02/imam-abdoulahy-ndaw-500x500.jpg">
</a>
<div class="employee-hover-overlay a_m_fly-top-left a_opacity-100 "></div>
</div>
<div class="team-info-wrapper m_7" itemscope="itemscope" itemtype="https://schema.org/Person">
<a class="team-member-name" href="http://developer.designprowebsolutions.com/sufi-intensive/team/imam-abdoulaye-ndaw/">
<span class="team-member-name a_font-16 a_display-block a_font-weight-bold a_text-transform-up a_color-333">Imam Abdoulaye Ndaw</span>
</a>
<span class="team-member-position a_font-12 a_text-transform-up a_display-block a_color-777 a_letter-spacing-1">Imam & Ustadz</span>
<div class="team-member-desc a_margin-top-20 a_margin-bottom-10 a_display-block"></div>
</div>
</div>

A quick way(not beautiful) is to replace the src of the element
src is a attribute on the element, so you can get the value with $(obj).attr("src") or set the value with $(obj).attr("src","newValue")
Edit I created a function so you can do this multiple times with multiple objects
Either add a class to the img, you want to change or call it by an attribute.
Class: fixImage($('.removeRatio'), "-500x500") or
Attribute: fixImage($('[title="Imam Abdoulaye Ndaw"]'), "-500x500")
console.log("This was my SRC: " + $('.removeRatio').attr("src"))
function fixImage(obj, removestring)
{
obj.attr("src", obj.attr("src").replace(removestring, ""))
}
fixImage($('.removeRatio'), "-500x500")
console.log("This now IS my SRC: " + $('.removeRatio').attr("src"))
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="speakers_list1" class="wpb_row vc_row mk-fullwidth-false attched-false vc_row-fluid js-master-row mk-in-viewport">
<div style="" class="vc_col-sm-12 wpb_column column_container _ height-full">
<div id="box-14" class="mk-employees a_margin-bottom-10 a_margin-top-10 four-column u6col u5col o0col o1col o2col o3col mk-employees-grayscale classic c_cs ">
<ul>
<li class="mk-employee-item a_colitem a_align-center a_display-inline-block a_float-left m_7">
<div class="item-holder">
<div class="team-thumbnail a_position-relative a_width-100-per a_height-100-per a_overflow-hidden rounded-true">
<a href="http://developer.designprowebsolutions.com/sufi-intensive/team/imam-abdoulaye-ndaw/">
<img class="removeRatio" alt="Imam Abdoulaye Ndaw" title="Imam Abdoulaye Ndaw" src="http://developer.designprowebsolutions.com/sufi-intensive/wp-content/uploads/2017/02/imam-abdoulahy-ndaw-500x500.jpg">
</a>
<div class="employee-hover-overlay a_m_fly-top-left a_opacity-100 "></div>
</div>
<div class="team-info-wrapper m_7" itemscope="itemscope" itemtype="https://schema.org/Person">
<a class="team-member-name" href="http://developer.designprowebsolutions.com/sufi-intensive/team/imam-abdoulaye-ndaw/">
<span class="team-member-name a_font-16 a_display-block a_font-weight-bold a_text-transform-up a_color-333">Imam Abdoulaye Ndaw</span>
</a>
<span class="team-member-position a_font-12 a_text-transform-up a_display-block a_color-777 a_letter-spacing-1">Imam & Ustadz</span>
<div class="team-member-desc a_margin-top-20 a_margin-bottom-10 a_display-block"></div>
</div>
</div>

How can I hide one div before opening another?

How can I make it so that only one div can be shown at a time? I've tried adding "document.getElementById(currentID).style.display='none';" in the after the else but that doesn't work.
<h5 onclick="showImage('chair')">Chair</h5>
<h5 onclick="showImage('table')">Table</h5>
<h5 onclick="showImage('long_table')">Meeting Table</h5>
<div id="chair">
<img src="images/1.jpg" height="300px"/>
<h4>Product 1</h4>
</div>
<div id="table">
<img src="images/2.jpg" height="300px"/>
<h4>Product 2</h4>
</div>
<div id="longtable">
<img src="images/3.jpg" height="300px"/>
<h4>Product 3</h4>
</div>
<script type="text/javascript">
var currentID = "";
function showImage(id){
if(currentID == id){
document.getElementById(id).style.display='none';
currentID = "";
}else{
document.getElementById(id).style.display='block';
currentID = id;
}
}
</script>

Better to add a class to your HTML and then grab the divs by their class. You can then loop through the elements to hide them all and then un-hide the one you've clicked.
Example:
var arrProducts = document.getElementsByClassName('product');
for (i = 0; i < arrProducts.length; i++) {
arrProducts[i].style.display = 'none';
}
function showImage(id) {
for (i = 0; i < arrProducts.length; i++) {
if (id == arrProducts[i].id) {
if (document.getElementById(id).style.display === 'none') {
arrProducts[i].style.display = 'block';
} else {
arrProducts[i].style.display = 'none';
}
} else {
arrProducts[i].style.display = 'none';
}
}
}
h5 {
cursor: pointer;
}
.product img {
height: 10px;
width: 10px;
}
<h5 onclick="showImage('chair');">Chair</h5>
<h5 onclick="showImage('table');">Table</h5>
<h5 onclick="showImage('long_table');">Meeting Table</h5>
<div class="product" id="chair">
<img src="images/1.jpg" height="300px" />
<h4>Product 1 (Chair)</h4>
</div>
<div class="product" id="table">
<img src="images/2.jpg" height="300px" />
<h4>Product 2 (Table)</h4>
</div>
<div class="product" id="long_table">
<img src="images/3.jpg" height="300px" />
<h4>Product 3 (Meeting Table)</h4>
</div>

While this won't help you fix things in you current code, you can actually do this without any JavaScript by abusing radiobuttons. This is quite common.
http://jsfiddle.net/mo7yppp8/
Each div needs a radio button above it, and to be enclosed within a label. This way, clicking on the div will trigger the radiobutton, deselecting any other div in the process.
<label>
<input class="divSelector" type="radio" name="divSelector" value="" />
<div>Sample text</div>
</label>
Then, all you need is some CSS to hide the radiobuttons, and some to shrink the divs which aren't right after a checked input.
.divSelector {
display: none;
}
.divSelector:checked + div {
font-size: 12pt;
}
div {
font-size: 0pt;
background-color: blue;
color: white;
overflow: clip;
padding: 2em;
height: 12px;
}
div:hover {
background-color: grey;
}

Try substituting longtable for long_table at "Meeting Table" h5
var showImage = function showImage(id) {
var active = document.getElementById(id);
active.style.display = 'block';
var notActive = document.querySelectorAll("div:not(#" + active.id + ")");
Array.prototype.slice.call(notActive)
.forEach(function(el) {
el.style.display = "none";
})
};
div[id] {
display: none;
}
<h5 onclick="showImage('chair')">Chair</h5>
<h5 onclick="showImage('table')">Table</h5>
<h5 onclick="showImage('longtable')">Meeting Table</h5>
<div id="chair">
<img src="images/1.jpg" height="300px" alt="chair" />
<h4>Product 1</h4>
</div>
<div id="table">
<img src="images/2.jpg" height="300px" alt="table" />
<h4>Product 2</h4>
</div>
<div id="longtable">
<img src="images/3.jpg" height="300px" alt="meeting table" />
<h4>Product 3</h4>
</div>

You need to rethink the logic of your function, I'm guessing this is what you meant:
var currentID = "";
function showImage(id){
if(currentID != id){
if (currentID != "") // added this test in response to JFK's comment
document.getElementById(currentID).style.display='none';
document.getElementById(id).style.display='block';
currentID = id;
}
else { // added after OP clarified the question
document.getElementById(id).style.display='none';
currentID = "";
}
}

If you have the chance to use jQuery, there is a really awesome solution possible. It would work like this:
http://jsfiddle.net/dnf6gsuL/2/
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
<h5>Chair</h5>
<div>
<img src="images/1.jpg" height="300px"/>
<h4>Product 1</h4>
</div>
<h5>Table</h5>
<div>
<img src="images/2.jpg" height="300px"/>
<h4>Product 2</h4>
</div>
<h5 id="longtable">Meeting Table</h5>
<div>
<img src="images/3.jpg" height="300px"/>
<h4>Product 3</h4>
</div>
<script>
$("h5").click(function(eve){
$("div").each(function(){
$(this).fadeOut("fast", function(){
$(eve.target).next("div").fadeIn("fast");
});
});
});
</script>