javascript - Change a background color of text by taking text name form url -

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i want change background colour of text matches url value. have tried this

<script> var full_url = document.url;  var url_array = full_url.split('='); var textname = url_array[url_array.length-1];    $("a:contains(textname)").css("background-color", "white");

but it's not working can me? in advance

note here aren't using value of textname variable in selector, because "a:contains(textname)" string.

what want is:

$("a:contains("+textname+")").css("background-color", "white");

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