Break and continue in jQuery each function(loop)

This is post I am going to explain about break and continue in jQuery each function(loop).

jQuery’s functions like $.each( Object obj, Function fn ) or $().each() are not loops.These are iterative functions. $().each() is used to iterate jQuery object and you can use $.each( Object obj, Function fn ) to iterate over anything (for example, an array).

jQuery loops are not like javascript (for and while loop) loops. We can use ‘break;’ and ‘continue;’ inside a loop in javascript. But it will not work in jQuery loop ($().each()). :(

But there is way for it, if you need the same functionality for a jQuery loop.

We can use ‘return false;’ inside a jQuery loop to break it.

jQuery loops are functions. So when we use ‘return false;’ from a function, it will immediately stop execution of function. So, it will work llike ‘break;’.

Similarly if we use ‘return;’ (without passing true or false) it will work as ‘continue’;

Check with this below example

First normal javascript

function Demo()
{
for(var i=0;i<=10;i++)
{
if(i==2)

continue;

if(i==4)

break;

document.write(i+'<br/>’);

}
}

Output:

0

1

3

Now jQuery

 

function Demo()

{

$.each([0,1,2,3,4,5], function()

{

if(this == 2)

continue;

if(this == 4)

break;

document.write(this+'<br/>’);

});

}

 

Output:

0

1

3

It work same like below each function also

 

function Demo()

{

$(‘div’).each(function(index) {

if(index == 2)

continue;

if(index == 4)

break;

$(this).css(‘color’,’red’);

});

}

Hope this post helpful for you. if is there any better way then this please let me know.

Enjoy while coding..!

Thanks,

Naga Harish.

  • Dave

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