I want to call .addCla开发者_Go百科ss on all elements that are direct children of body. How would I do this?
It's a bit unclear what you mean. This will call it on all <body> tags (hopefully you only have one):
$("body").addClass("some-class")
If you need to call it on all descendants of body, i.e. all elements:
$("body *").addClass("some-class")
Or, if you want to call .addClass on all elements that are direct children of body:
$("body > *").addClass("some-class")
Use this instead
$("body").children().addClass("some-class");
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