jquery - How to display special characters in input elements using javascript? -

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i want set placeholder special characters input. thus, code: 

input.attr('placeholder', '●●●●●');

this outputs special char codes instead of special characters. correct way display special characters in input elements using javascript?

<input> elements use plain text, not html, don't overcomplicate life :)

just:

input.placeholder="●●●●●";

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