[英]React - Set component state from external script
我有 React 项目,我想向应用程序添加外部脚本:
<script async src="https://geowidget.easypack24.net/js/sdk-for-javascript.js"></script>
<link rel="stylesheet" href="https://geowidget.easypack24.net/css/easypack.css"/>
并调用方法:
<script type="text/javascript">
window.easyPackAsyncInit = function () {
easyPack.init({});
var map = easyPack.mapWidget('easypack-map', function(point){
console.log(point);
});
};
</script>
<div id="easypack-map"></div>
我是这样做的:
componentDidMount() {
const script1 = document.createElement("script");
script1.src = "https://geowidget.easypack24.net/js/sdk-for-javascript.js";
script1.async = true;
document.body.appendChild(script1);
const script2 = document.createElement("script");
script2.type = 'text/javascript';
script2.async = true;
script2.innerHTML = "window.easyPackAsyncInit = function () {easyPack.init({});var map = easyPack.mapWidget('easypack-map', function (point) {console.log(point);});};";
document.body.appendChild(script2);
}
它正在工作,但我想在我的组件中使用 function 返回值point
(将其用作组件状态)
选项 1从另一个脚本调用:只需将 this.setState 暴露this.setState
上的一个方法并调用该方法将更新它的 state
componentDidMount() {
window.setPoint = (point)=>this.setState('point',point)
}
// open console and run setPoint(xxx) and check the UI change
选项 2调用公开方法并像您一样从 react 调用,但情况可能会更好
<script async src="https://geowidget.easypack24.net/js/sdk-for-javascript.js"></script>
<link rel="stylesheet" href="https://geowidget.easypack24.net/css/easypack.css"/>
你可以将这些添加到你的模板<head>
标签,html文件或webpack中的html插件,添加脚本可能会导致重复
那么你只需要
componentDidMount() {
easyPack.init({});
var map = easyPack.mapWidget('easypack-map', (point)=>{
console.log(point);
this.setState('point',point)
});
好的,我找到了解决方案。 在function中设置window.point,然后在Component中读取window.point
script2.innerHTML = "window.easyPackAsyncInit = function () {easyPack.init({});var map = easyPack.mapWidget('easypack-map', function (point) {window.point = point);});};";
但这是最好的解决方案吗?
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