[英]how to call the parent method of another method in dojo
how could i call the parent method of another method in dojo. 我怎么能在dojo中调用另一个方法的父方法。 consider the following example:
考虑以下示例:
var parent = declare(null,{
m1: function(arg){
console.log("parent.m1");
},
m2: function(arg){
console.log("parent.m2");
}
});`enter code here`
var child = declare(parent,{
m1: function(arg){
console.log("child.m1");
// how can i call parent.**m2** here directly without calling child.m2
},
m2: function(arg){
console.log("child.m2");
}
});
how can i call parent.m2 directly from child.m1 without invoking child.m2 at all 我怎么能直接从child.m1调用parent.m2而根本不调用child.m2
now suppose i define two modules as the following: 现在假设我定义了以下两个模块:
parentModule.js
var parent = declare(null,{
m1: function(arg){
console.log("parent.m1");
},
m2: function(arg){
console.log("parent.m2");
}
});
return declare("ParentModule",[parent,child]);
//******************************************//
childModule.js
return declare("child",null,{
m1: function(arg){
console.log("child.m1");
// how can i call parent.**m2** here directly without calling child.m2
//if we call ParentModule.prototype.m2.call(this,arguments); this will call child.m2
//as child module override the parent now
//also calling this.getInherited("m2",arguments); will call child.m2 !!!
//how to fix that?
},
m2: function(arg){
console.log("child.m2");
}
});
When using dojo's declare you can use this.inherited(arguments)
in the child function to call the parent function, see: 使用dojo的声明时,可以在
this.inherited(arguments)
中使用this.inherited(arguments)
来调用父函数,请参见:
http://dojotoolkit.org/reference-guide/1.8/dojo/_base/declare.html#dojo-base-declare-safemixin http://dojotoolkit.org/reference-guide/1.8/dojo/_base/declare.html#dojo-base-declare-safemixin
m1: function (arg) {
console.log("child.m1");
this.inherited(arguments);
}
You can use the javascript's prototype functionality to accomplish what you are asking. 您可以使用javascript的原型功能来完成您要的内容。
m1: function(arg){
console.log("child.m1");
parent.prototype.m2.apply(this, arguments);
},
More about prototype can be found here How does JavaScript .prototype work? 有关原型的更多信息,请参见此处。JavaScript .prototype如何工作?
Here is an example of this working http://jsfiddle.net/cswing/f9xLf/ 这是此工作示例http://jsfiddle.net/cswing/f9xLf/
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