Jquery closes automatically div added
I have this html code generated by Content builder JS editor in my back office :
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I need to add into my div #slider 2 news divs (.swiper-wrapper and .pagination) to make a slider, and have this final code. Because of editing problems in my Js editor, i can't set it in html ! :
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In Jquery, i did this
$('#slider .column:first-child').before('');
$('#slider .column:last-child').after('');
The problem is that Jquery "autocloses" the divs appended.
How can i solve it ?
My result actually :
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