javascript 在类方法中使用 React.js 静态
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Using React.js statics inside class methods
提问by Tzach
I have the following widget class:
我有以下小部件类：
var Widget = React.createClass({
statics: {title: "a title"},
...
});
Is there a way of accessing the title static inside the class'es methods (using this)? For example:
有没有办法访问类的方法中的静态标题（使用this）？例如：
render: function() {
return <div>{this.title}</div>;
}
回答by Geoffrey Abdallah
You can access a static from within the component from this.constructor:
您可以从以下组件中访问静态this.constructor：
so in this case it would be:
所以在这种情况下，它将是：
this.constructor.title
回答by Brigand
The direct answer:
直接回答：
React.createClass({
title: 'a title',
render: function() {
return <div>{this.title}</div>;
}
});
Or:
或者：
React.createClass({
componentWillMount: function(){
this.title = 'a title';
},
render: function() {
return <div>{this.title}</div>;
}
});
But really... why not just use a variable?
但真的......为什么不只使用一个变量？
var TITLE = 'a title';
React.createClass({
render: function() {
return <div>{TITLE}</div>;
}
});
回答by cyberglot
The staticsobject of a React Class is a way to define static methods (i.e., methods that don't need any context to run). That being said, it doesn't make sense to call a static method from this.
staticsReact 类的对象是一种定义静态方法（即不需要任何上下文即可运行的方法）的方式。话虽如此，从this.
It looks like you're looking for a "static" property (i.e., non-mutable). So, you should use it like this.props.titleon render(). To set the value of title, you should do <Widget title='a title'/>. It worths mentioning that you can set default properties, by defining the getDefaultPropsmethod.
看起来您正在寻找“静态”属性（即非可变属性）。所以，你应该像this.props.titleon一样使用它render()。要设置 title 的值，您应该执行<Widget title='a title'/>. 值得一提的是，您可以通过定义getDefaultProps方法来设置默认属性。
