javascript-React / CSS-当宽度为自动时,内容更改后动画按钮的宽度会重新调整大小

我有一个表示按钮的react组件,该按钮根据某些道具更改内容和颜色.如果表单组件包含此按钮并提交,则该按钮将更改其内容和颜色.这很好.

现在,我想要一个动画(CSS过渡),用于在按钮内容更改时进行更改.不能为不同的状态设置显式宽度,因为该应用程序是多语言的.使用最大宽度时,动画仅在按钮扩展时起作用,而在按钮减小时不起作用.

这是一个带有按钮组件的代码段,它每秒都会更改状态.就像在实际组件中一样,此人使用引导程序btn类：

class Button extends React.Component {  constructor(props) {    super(props);    this.state = {status: 0};  }  componentDidMount() {    this.timerID = setInterval(      () => this.tick(),      1000    );  }  tick() {    let status = this.state.status;    status  ;    if(status >= 2) {      status = 0;    }    this.setState({      status: status    });  }  render() {    const btnClass = this.state.status ? 'primary' : 'secondary';        return (      <button className={`btn btn-${btnClass}`} type='button'>        {this.state.status ? this.props.large : this.props.short}      </button>    );  }}// Render itReactDOM.render(  <Button large='This is a long button you can click on!' short='short'/>,  document.getElementById('react'));

.btn {    -webkit-transition: width 1s; /* Safari */    transition: max-width 1s;    width: auto;}.btn-primary {  max-width: 300px;}.btn-secondary {  max-width: 50px;}

<div id="react"></div><script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react.min.js"></script><script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react-dom.min.js"></script><link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va PmSTsz/K68vbdEjh4u" crossorigin="anonymous">

如何获得宽度变化的动画(当按钮再次变小时)？

请考虑一个答案,并不仅限于CSS.我想到了react组件计算它的宽度,然后将其设置在componentWillMount函数中,但是那也不起作用…

解决方法:

我有解决办法.将最小宽度添加到您的CSS类并按如下所示进行转换.

在向上动画.在下降的过程中进行动画处理.

class Button extends React.Component {  constructor(props) {    super(props);    this.state = {status: 0};  }  componentDidMount() {    this.timerID = setInterval(      () => this.tick(),      1000    );  }  tick() {    let status = this.state.status;    status  ;    if(status >= 2) {      status = 0;    }    this.setState({      status: status    });  }  render() {    const btnClass = this.state.status ? 'primary' : 'secondary';        return (      <button className={`btn btn-${btnClass}`} type='button'>        {this.state.status ? this.props.large : this.props.short}      </button>    );  }}// Render itReactDOM.render(  <Button large='This is a long button you can click on!' short='short'/>,  document.getElementById('react'));

.btn {    -webkit-transition: width 1s; /* Safari */     transition: max-width 1s, min-width 1s;     width: auto;}.btn-primary {  max-width: 330px;  min-width: 230px;}.btn-secondary {  max-width: 60px;  min-width: 40px;  text-align: left;}

<div id="react"></div><script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react.min.js"></script><script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react-dom.min.js"></script><link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va PmSTsz/K68vbdEjh4u" crossorigin="anonymous">

来源：https://www.icode9.com/content-1-519151.html