javascript - Calculate text size before inserted to DOM -


is possible calculate height of text before inserted dom? width of div container known, need way calculate height before inserted. heights of 1 line of text known (css), height calculated multiplying height of 1 line amount of lines, question if possible calculated before it's dom.

since question explicitly requires text not inserted dom precludes used method of inserting outside viewport , measuring there.

an alternative approach: canvas 2d rendering context's measuretext function can used determine width if know styling (font width) apply in advance.

some advanced css rules such letter-spacing may make results inaccurate.


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