I have a layout similar to this:
<div id="..."><img src="..."></div>
and would like to use a jQuery selector to select the child img
inside the div
on click.
To get the div
, I've got this selector:
$(this)
How can I get the child img
using a selector?
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 could also use
$(this).find('img');
which would return all img
s that are descendants of the div
$(this).children('img')
would be better. e.g. <div><img src="..." /><div><img src="..." /></div></div>
because presumably the user wants to find 1st-level imgs.
If you need to get the first img
that's down exactly one level, you can do
$(this).children("img:first")
If your DIV tag is immediately followed by the IMG tag, you can also use:
$(this).next();
The direct children is
$('> .child-class', this)
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
Without knowing the ID of the DIV I think you could select the IMG like this:
$("#"+$(this).attr("id")+" img:first")
Try this code:
$(this).children()[0]
You can use either of the following methods:
1 find():
$(this).find('img');
2 children():
$(this).children('img');
jQuery's each
is one option:
<div id="test">
<img src="testing.png"/>
<img src="testing1.png"/>
</div>
$('#test img').each(function(){
console.log($(this).attr('src'));
});
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");
Also this should work:
$("#id img")
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: '+$(this).find('img')); // Here, i'm selecting the first ocorrence of console.log('Method #3: '+$(this).find('img:eq(0)')); }); }); .the_div{ background-color: yellow; width: 100%; height: 200px; }
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; }
$(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: '+$(this).find('img')); // Here, i'm selecting the first ocorrence of console.log('Method #3: '+$(this).find('img:eq(0)')); }); }); .the_div{ background-color: yellow; width: 100%; height: 200px; }
If your img is exactly first element inside div then try
$(this.firstChild);
$( "#box" ).click( function() { let img = $(this.firstChild); console.log({img}); })
With native javascript you can use
if you've more than one image tag then use
this.querySelectorAll("img")
if only one image tag then us
this.querySelector("img")
You could use
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js">
$(this).find('img');
</script>
Success story sharing