The jQuery constructor accepts a 2nd parameter called context which can be used to override the context of the selection.
jQuery("img", this);
Which is the same as using .find() like this:
jQuery(this).find("img");
If the imgs you desire are only direct descendants of the clicked element, you can also use .children():
jQuery(this).children("img");
You can find all img element of parent div like below
$(this).find('img') or $(this).children('img')
If you want a specific img element you can write like this
$(this).children('img:nth(n)')
// where n is the child place in parent list start from 0 onwards
Your div contains only one img element. So for this below is right
$(this).find("img").attr("alt")
OR
$(this).children("img").attr("alt")
But if your div contain more img element like below
<div class="mydiv">
<img src="test.png" alt="3">
<img src="test.png" alt="4">
</div>
then you can't use upper code to find alt value of second img element. So you can try this:
$(this).find("img:last-child").attr("alt")
OR
$(this).children("img:last-child").attr("alt")
This example shows a general idea that how you can find actual objects within the parent object. You can use classes to differentiate your child's object. That is easy and fun. i.e.
<div class="mydiv">
<img class='first' src="test.png" alt="3">
<img class='second' src="test.png" alt="4">
</div>
You can do this as below :
$(this).find(".first").attr("alt")
and more specific as:
$(this).find("img.first").attr("alt")
You can use find or children as above code. For more visit Children http://api.jquery.com/children/ and Find http://api.jquery.com/find/. See example http://jsfiddle.net/lalitjs/Nx8a6/
Ways to refer to a child in jQuery. I summarized it in the following jQuery:
$(this).find("img"); // any img tag child or grandchild etc...
$(this).children("img"); //any img tag child that is direct descendant
$(this).find("img:first") //any img tag first child or first grandchild etc...
$(this).children("img:first") //the first img tag child that is direct descendant
$(this).children("img:nth-child(1)") //the img is first direct descendant child
$(this).next(); //the img is first direct descendant child
You can use Child Selecor to reference the child elements available within the parent.
$(' > img', this).attr("src");
And the below is if you don't have reference to $(this) and you want to reference img available within a div from other function.
$('#divid > img').attr("src");
Here's a functional code, you can run it (it's a simple demonstration).
When you click the DIV you get the image from some different methods, in this situation "this" is the DIV.
$(document).ready(function() {
// When you click the DIV, you take it with "this"
$('#my_div').click(function() {
console.info('Initializing the tests..');
console.log('Method #1: '+$(this).children('img'));
console.log('Method #2: '+$(this).find('img'));
// Here, i'm selecting the first ocorrence of <IMG>
console.log('Method #3: '+$(this).find('img:eq(0)'));
});
});.the_div{
background-color: yellow;
width: 100%;
height: 200px;
}<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="my_div" class="the_div">
<img src="...">
</div>Hope it helps!
You may have 0 to many <img> tags inside of your <div>.
To find an element, use a .find().
To keep your code safe, use a .each().
Using .find() and .each() together prevents null reference errors in the case of 0 <img> elements while also allowing for handling of multiple <img> elements.
// Set the click handler on your div
$("body").off("click", "#mydiv").on("click", "#mydiv", function() {
// Find the image using.find() and .each()
$(this).find("img").each(function() {
var img = this; // "this" is, now, scoped to the image element
// Do something with the image
$(this).animate({
width: ($(this).width() > 100 ? 100 : $(this).width() + 100) + "px"
}, 500);
});
});#mydiv {
text-align: center;
vertical-align: middle;
background-color: #000000;
cursor: pointer;
padding: 50px;
}<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<div id="mydiv">
<img src="" width="100" height="100"/>
</div>$(document).ready(function() {
// When you click the DIV, you take it with "this"
$('#my_div').click(function() {
console.info('Initializing the tests..');
console.log('Method #1: '+$(this).children('img'));
console.log('Method #2: '+$(this).find('img'));
// Here, i'm selecting the first ocorrence of <IMG>
console.log('Method #3: '+$(this).find('img:eq(0)'));
});
});.the_div{
background-color: yellow;
width: 100%;
height: 200px;
}<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="my_div" class="the_div">
<img src="...">
</div>If your img is exactly first element inside div then try
$(this.firstChild);
$( "#box" ).click( function() {
let img = $(this.firstChild);
console.log({img});
})<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div id="box"><img src="https://picsum.photos/seed/picsum/300/150"></div>