jQuery实现文本域中按回车加换行

jQuery(this).val( val.substr(0, curr) + '<br/>' + val.substr(curr, end));
}

})
});

function getCaret(el) {
if (el.selectionStart) {
return el.selectionStart;
}
else if (document.selection) {
el.focus();

var r = document.selection.createRange();
if (r == null) {
return 0;
}

var re = el.createTextRange(),
rc = re.duplicate();
re.moveToBookmark(r.getBookmark());
rc.setEndPoint('EndToStart', re);

return rc.text.length;
} 
return 0;
}

</script>

html

<div class="content">
<textarea>在光标位置按回车加br标签</textarea>
</div>