解决承诺后,我想返回要在父级中呈现的模板.我知道不能从诺言中返回价值.收到模板数据后,如何渲染模板？
在以下示例中,ContentPane是父级,列出了要渲染的所有模板.在电影中,进行网络呼叫,因此需要呈现模板.
ContentPane.prototype.getTemplate = function(){
let template = `
<div class="contentPane" id="contentPane">
${new Films().render()}
</div>
`;
return template;
}
Films.prototype.render = function(){
var template = this.getTemplate();
template.then(function(val){
return val;
})
//based on the value resolved by promise,//appropriate template should be returned to parent
}
Films.prototype.getTemplate = async function(){
//make network call
//create template based on server response
}
最佳答案
尝试执行aync-await操作.
const ContentPane = function() {}
const Films = function () {}
ContentPane.prototype.getTemplate = async function(){
let template = `
<div class="contentPane" id="contentPane">
${await new Films().render()}
</div>
`;
return template;
}
Films.prototype.render = async function(){
var value = await this.getTemplate();
return value;
}
Films.prototype.getTemplate = async function(){
return new Promise((res,rej) => {
setTimeout(() => {
res('123');
},1000);
});
}
new ContentPane().getTemplate().then(template => {
console.log(template);
});
