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function HelloWorld({greeting = "hello", greeted = '"World"', silent = false, onMouseOver,}) { if(!greeting){return null}; // TODO: Don't use random in render let num = Math.floor (Math.random() * 1E+7).toString().replace(/.d+/ig, "") return <div className='HelloWorld' title={`You are visitor number ${ num }`} onMouseOver={onMouseOver}> <strong>{ greeting.slice( 0, 1 ).toUpperCase() + greeting.slice(1).toLowerCase() }</strong> {greeting.endsWith(",") ? " " : <span style={{color: 'grey'}}>", "</span> } <em> { greeted } </em> { (silent) ? "." : "!"} </div>; }
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