1、错误描述
react.js:20157 Uncaught Invariant Violation: _registerComponent(...): Target container is not a DOM element.
2、错误原因
<script>
var ea = React.createClass({
render: function() {
var elapsed = Math.round(this.props.elapsed / 100);
var seconds = elapsed / 10 + (elapsed % 10 ? '' : '.0' );
var message = '开始计时：' + seconds + ' 秒';
return React.DOM.p(null,message);
}
});
var eaf = React.createFactory(ea);
var timer = document.getElementById('timer');
var startTime = new Date().getTime();
setInterval(function() {
ReactDOM.render(
eaf({elapsed: new Date().getTime() - startTime}),timer
);
},1000);
</script> 在定时器中需要获取div容器对象，这里利用变量timer来实现；但是会出现这个错误
3、解决办法
<script>
var ea = React.createClass({
render: function() {
var elapsed = Math.round(this.props.elapsed / 100);
var seconds = elapsed / 10 + (elapsed % 10 ? '' : '.0' );
var message = '开始计时：' + seconds + ' 秒';
return React.DOM.p(null,message);
}
});
var eaf = React.createFactory(ea);
var startTime = new Date().getTime();
setInterval(function() {
ReactDOM.render(
eaf({elapsed: new Date().getTime() - startTime}),document.getElementById('timer')
);
},1000);
</script> 不利于中间变量timer，直接利用JS获取对象的方法