js的hover实现方法。

onMouseEnter={(utils.isiPad() || utils.isPhone()) ? () => { } : () => this.toggleHoverEnter(modules.length, index)} onMouseLeave={(utils.isiPad() || utils.isPhone()) ? () => { } : () => this.toggleHoverLeave(modules.length, index)}   toggleHoverEnter = (length, index) => { let _num = new Array(length + 1).join(0).split(‘‘);     _num[index] = 1;     this.setState({         num: _num      }) } toggleHoverLeave = (length, index) => { let _num = new Array(length + 1).join(0).split(‘‘);     _num[index] = 0;     this.setState({         num: _num      }) }