javascript - How to use AND Operator -

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javascript - How to use AND Operator -

if utilize this, not work

if (levelspecificdata.labelfont) if (levelspecificdata.labelfont !== "arial" || levelspecificdata.labelfont !== "arial black" || levelspecificdata.labelfont !== "arial narrow" || levelspecificdata.labelfont !== "verdana" || levelspecificdata.labelfont !== "trebuchet ms") homecoming false; if (levelspecificdata.labelfont !== "arial") homecoming false;

or operator

if (levelspecificdata.labelfontsize) if (levelspecificdata.labelfontsize < 2 || levelspecificdata.labelfontsize > config.20) homecoming false;

so utilize comparing between strings utilize , operator

if (levelspecificdata.labelfont) if (levelspecificdata.labelfont !== "arial" && levelspecificdata.labelfont !== "arial black" && levelspecificdata.labelfont !== "arial narrow" && levelspecificdata.labelfont !== "verdana" && levelspecificdata.labelfont !== "trebuchet ms") homecoming false;

use array font names , check if contains value:

if (levelspecificdata.hasownproperty("labelfont")) { if (config.fonts.indexof(levelspecificdata.labelfont) < 0) { homecoming false; } }

where config object settings including font array:

config = { somesetting: 'somevalue', anothersetting: 'anothervalue', fonts: ['arial', 'arialblack', 'arialnarrow', 'verdana', 'trebuchetms'] }

javascript node.js

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