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How would you retrieve the value of the ID tag using its class name in jQuery.
I am trying the following code but it returns value undefined.
<html>
<body>
<textarea id='5' class='cp _check'>sometexthere</textarea>
</body>
<html>
And calling it using the following function:
function updatecontent() {
var check = $('.cp _check').('#id').val();
alert(check);
}
The alert box returns value as undefined.
257
You are looking for attr() or prop().
Since you want to obtain the value of the id HTML attribute, I would emphasize that and go with attr():
var id = $(".cp._check").attr("id");
Your class selector is also incorrect: since your element exposes both the cp and the _check classes, it should be .cp._check instead of .cp _check (which would match the <_check> elements that are descendants of elements that expose the cp class).
120
Use attr():
$(".cp_check").attr("ID");
Live Demo: http://jsfiddle.net/3WHqS/
It's also perhaps worth nothing your HTML markup has 2 classes, cp and _check. You need to remove the whitespace between the 2 for this to become 1 class: cp_check.
21
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