jQuery: Checking if next element exists
JavascriptJqueryJavascript Problem Overview
Is there a way to check if an next element exists? Check my code:
if($("#people .making-of .mask ul li.current").next("li") != null) {
alert("Exists");
}
else {
alert("Dont exists");
}
What am I doing wrong? Thanks a lot!
Javascript Solutions
Solution 1 - Javascript
Have you tried looking at .next('li').length?
Solution 2 - Javascript
Use jQuery .is(), using .is() you can even check what tag, class or ID next element have?
if($("#people .making-of .mask ul li.current").next().is('li')) {
alert("Exists");
}
else {
alert("Dont exists");
}
Solution 3 - Javascript
The briefest method is just:
if( $( ... ).next('li')[0] ) {
Since jQuery functions always return a jQuery object, it's never equal to null. But accessing a jQuery object like an array acts like you are using an array of DOM objects, so [0] will pull the first matched DOM element or null. Checking .length() against 0 works, as well.
Solution 4 - Javascript
Use the length method in jQuery:
if($(...).next().length > 0) {
alert("Exists.")
} else {
alert("Doesn't exist!")
}
Solution 5 - Javascript
if($("#people .making-of .mask ul li.current").next("li").length > 0) {
alert("Exists");
}
else {
alert("Dont exists");
}
Solution 6 - Javascript
Like the post above says, you need to check the length of the item. Jquery.next() will always return a jquery object, but if there is no next item, it will have a length of 0.
if($("#people .making-of .mask ul li.current").next("li").length > 0) {
alert("Exists");
}
else {
alert("Dont exists");
}
Solution 7 - Javascript
I think this is good to use like.
if ($(this).nextAll().length > 0) {
alert("Exists");
}else{
alert("Don't exists");
}