add style to html tage react] code example

Example 1: conditional style prop react

style={{ textDecoration: todo.completed && "line-through" }}

style={{ textDecoration: todo.completed ? "line-through" : 'none' }}

Example 2: inline style react

// Typical component with state-classes
<ul className="todo-list">
  {this.state.items.map((item,i)=>({
<li 
 className={classnames({ 'todo-list__item': true, 'is-complete': item.complete })}>
            {item.name}
</li>
 })}
</ul>

// Using inline-styles for state
<li className='todo-list__item'
 style={(item.complete) ? styles.complete : {}} />

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