javascript - How to search by classname and in element with style 'display='none'' -


my code

i have problem searching in javascript.

i need both throughout document , css class.

<span class="id">153</span> <span class="keywords">pararell processing, evolutionary algorithm, linear algebra algorithm, fpga</span> <span class="author">oleg maslennikow, </span>

i want search g in oleg not in processing.

if search want show hide elements, , after hide it..

in case, able after class = 'author'.

i able @ elements have style display = 'none' showing element , keep it.

can me?

i dont want use jquery!

if using chrome browser should support document.queryselector()

this how achieve need :

document.queryselector('span.author'); // return span class="author"

it supported in below browsers: https://developer.mozilla.org/en-us/docs/dom/element.queryselectorall

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