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javascript - HTML5 "placeholder" support

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

How can I find out if the browser supports the HTML5 placeholder tag, so I can decide whether to hook my jQuery placeholder plugin or not.

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1 Answer

answered Oct 24, 2021 by 深蓝 (71.8m points)

var placeholderSupported = ( 'placeholder' in document.createElement('input') );

The variable placeholderSupported will be true if it is natively supported. Otherwise, it'll be set to false.

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