麻烦骨干网和打字稿 [英] Trouble with Backbone and Typescript
问题描述
我学习了打字稿骨干,我得到了骨干头文件。我想创造一个我引用本的渲染功能,内部的视图。但Webstorm是上抛出一个错误:
类QuestionView扩展Backbone.View {
模型=新问题();
模板:(数据:任何)=>串; 构造器(选件){
超(选件);
this.tagName =格;
this.template = _.template($(#附加问题)HTML());
_.bindAll(这一点,渲染);
} 渲染(){
。这$ el.html()(this.template(this.model.toJSON())); //错误指向先在该行本字面
返回此;
}
}
错误:
C:/.../ Main.ts(40,9):错误TS2088:不能援引一名前pression其类型缺少调用签名。
通常与这个
的问题是涉及到的范围,但在你的情况下,它只是涉及到错字在你的 HTML
方法调用:
渲染(){
这$ el.html(this.template(this.model.toJSON())); //固定
返回此;
}
要设置元素的HTML,你通过 HTML
方法的括号内的HTML - 你不小心没有通过参数(所以这得到HTML,而不是设置HTML),然后试图调用生成的HTML的字符串像一个函数。
这一点。$ el.html()//返回HTML字符串
这$ el.html('< DIV>的Hello World< / DIV>')//设置HTML所提供的字符串
I am learning backbone over Typescript and I got the header file for backbone. I am trying to create a view in which I've referenced "this" inside the render function. But Webstorm is throwing an error on that:
class QuestionView extends Backbone.View{
model = new Question();
template: (data:any) => string;
constructor(options){
super(options);
this.tagName = "div";
this.template = _.template($("#add-question").html());
_.bindAll(this, "render");
}
render(){
this.$el.html()(this.template(this.model.toJSON())); // The error is pointing to the first "this" literal in this line
return this;
}
}
Error:
C:/.../Main.ts(40,9): error TS2088: Cannot invoke an expression whose type lacks a call signature.
Usually with this
problems it is related to scope, but in your case it is just related to a typo in your html
method call:
render(){
this.$el.html(this.template(this.model.toJSON())); // fixed
return this;
}
To set the HTML of an element, you pass the HTML inside the parenthesis of the html
method - you accidentally passed no arguments (so this GETS the HTML, rather than SETS the HTML) and then tried to call the resulting string of HTML like a function.
this.$el.html() // returns a string of HTML
this.$el.html('<div>Hello World</div>') // sets the html to the supplied string
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