onmouseover没有使用React.js

Question

The click event works fine, but the onmouseover event does not work.

ProfImage = React.createClass({

    getInitialState: function() {
        return { showIcons: false };
    },

    onClick: function() {

        if(this.state.showIcons == true) {
            this.setState({ showIcons: false });
        }
        else {
            this.setState({ showIcons: true });
        }
    },

    onHover: function() {
        this.setState({ showIcons: true });
    },

    render: function() {

        return (
            <div>
            <span className="major">
                <img src="/images/profile-pic.png" height="100" onClick={this.onClick} onmouseover={this.onHover} />
            </span>


            { this.state.showIcons ? <SocialIcons /> : null }
            </div>

        );
    }

});

Answer 1

你需要把一些字母大写。

<img src="/images/profile-pic.png" height="100" onClick={this.onClick} onMouseOver={this.onHover} />

Answer 2

上面的答案都是正确的，但你需要将这些方法绑定到类上下文！

<img src="/images/profile-pic.png" height="100" onClick={this.onClick.bind(this)} onMouseOver={this.onHover.bind(this)} />