ReactJS动态更改背景图像? [英] ReactJS change background image dynamically?
本文介绍了ReactJS动态更改背景图像?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我正在尝试为以下div动态更改背景图像样式:
I was trying to change background image style dynamically for the following div:
这是我的更改它的组件,
Here is my component for changing it,
render: function() {
var divImage = {
backgroundImage : "url(" + this.state.song.imgSrc + "),url(" + this.state.nextImgSrc + ");"
};
return (
<li>
<div ref="image-pane" className="player" style={divImage}></div>
</li>
)
}
感谢帮助
推荐答案
您尚未指定何时更改 backgroundImage
,因此我创建了使用 onClick
进行更改的版本:
You haven't specified when would you like to change backgroundImage
, so I've created version which changes it with onClick
:
React.createClass({
getInitialState: function () {
nextImg: false,
},
handleClick: function () {
this.setState({ nextImg: !this.state.nextImg })
},
render: function() {
var imgUrl = this.state.nextImg ? this.state.nextImgSrc : this.state.song.imgSrc;
var divStyle = {
backgroundImage: 'url(' + imgUrl + ')'
}
return (
<li>
<div ref="image-pane" style={divStyle} onClick={this.handleClick} className="player"></div>
</li>
)
}
});
注意 backgroundImage:'url('+ imgUrl +')'
不再必须具有尾部分号,实际上尾部分号将导致React引发并出错。
Notice that backgroundImage: 'url(' + imgUrl + ')'
no longer must have trailing semicolon, in fact the trailing semicolon will cause React to raise and error.
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