[英]sharepoint content query webpart: hide empty column with jquery
我想在editform.aspx中隱藏列表列
</script>
<script language="JavaScript">
$(document).ready(function()
{ $('nobr:contains("columnname")').closest('tr').hide() });
</script>
有用。 但是現在,如果沒有價值,我想隱藏它。 這個怎么做?
$(document).ready(function()
{ if ($('nobr:contains("columnname")').val() == "")
{
$('nobr:contains("columnname")').closest('tr').hide()
}
});
<script language="JavaScript">
$(document).ready(
function()
{
// Creating an object to reduce JQuery selector to get the same element again
// which reduces a considerable lines of code being interpreted from JQuery lib
// which is expensive operation than having a reference object in hand.
var myElement = $('nobr:contains("columnname")');
// since they typeof(myElement.val().length) is number,
// you can use === conditional operator.
// '===' is faster. The reason being, that it only needs to compare the type,
// and if that matches, compare the raw data.
// The == operator will try to convert one type to another if they don't match.
// This will be a more expensive operation in most cases.
if(myElement.val().length === 0) //or if(myElement.val() === "")
{
myElement.closest('tr').hide();
}
}
);
</script>
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