Javascript 在reactjs应用程序中,如何获得dom元素的正确宽度?
当我用reactjs编写web应用程序时,我想在目标div容器中创建视频播放器 因此,我在“componentDidMount”函数中编码如下:Javascript 在reactjs应用程序中,如何获得dom元素的正确宽度?,javascript,html,reactjs,Javascript,Html,Reactjs,当我用reactjs编写web应用程序时,我想在目标div容器中创建视频播放器 因此,我在“componentDidMount”函数中编码如下: componentDidMount(){ const box = document.getElementById('video-box'); //use the ThirdPartyObject player API to create the player player = ThirdPartyObject('#vide
componentDidMount(){
const box = document.getElementById('video-box');
//use the ThirdPartyObject player API to create the player
player = ThirdPartyObject('#video-box').videoPlayer({
'width':box.clientWidth,
'height':box.clientWidth * 9 / 16,
'vid' : vid,
'df': '1'
});
}
但是,事实上,我让球员比实际的盒子更宽。详情如下:
因此,当页面刷新时,我在chrome控制台中测试了代码“document.body.clientWidth”。起初,结果是1440,但最后数字变为1423
那为什么呢?如何做正确的事情?当我做一些实验时,如下所示:
componentDidMount(){
const box = document.getElementById('video-box');
//use the ThirdPartyObject player API to create the player
console.log('before player init: ' + box.clientWidth)
player = ThirdPartyObject('#video-box').videoPlayer({
'width':box.clientWidth,
'height':box.clientWidth * 9 / 16,
'vid' : vid,
'df': '1'
});
console.log('after player init: ' + box.clientWidth)
}
我喜欢在播放器初始化之后,输出宽度是正确的。
我改变球员的风格,使其发挥作用。虽然我知道这不是一个完美的方式
componentDidMount(){
const box = document.getElementById('video-box');
//use the ThirdPartyObject player API to create the player
console.log('before player init: ' + box.clientWidth)
player = ThirdPartyObject('#video-box').videoPlayer({
'width':box.clientWidth,
'height':box.clientWidth * 9 / 16,
'vid' : vid,
'df': '1'
});
player.style.width = box.clientWidth
player.style.height = box.clientWidth *9 /16
}
当我做一些实验时,如下所示:
componentDidMount(){
const box = document.getElementById('video-box');
//use the ThirdPartyObject player API to create the player
console.log('before player init: ' + box.clientWidth)
player = ThirdPartyObject('#video-box').videoPlayer({
'width':box.clientWidth,
'height':box.clientWidth * 9 / 16,
'vid' : vid,
'df': '1'
});
console.log('after player init: ' + box.clientWidth)
}
我喜欢在播放器初始化之后,输出宽度是正确的。
我改变球员的风格,使其发挥作用。虽然我知道这不是一个完美的方式
componentDidMount(){
const box = document.getElementById('video-box');
//use the ThirdPartyObject player API to create the player
console.log('before player init: ' + box.clientWidth)
player = ThirdPartyObject('#video-box').videoPlayer({
'width':box.clientWidth,
'height':box.clientWidth * 9 / 16,
'vid' : vid,
'df': '1'
});
player.style.width = box.clientWidth
player.style.height = box.clientWidth *9 /16
}