Verwenden der Call-Methode zum Implementieren von js inheritance_javascript-Fähigkeiten

复制代码 代码如下:

//采用call方式实现js继承
function A(color ) {
this.Acolor = color;
this.AshowColor = function() {
document.writeln("Acolor: " this.Acolor);
}
}

function B(color, name) {
A.call(this, color);

this.Bname = Name;
this.BshowName = function() {
document.writeln("Bname: " this.Bname);
}
}

var objA = new A("red");
objA.AshowColor();
document.writeln("----------------");
var objB = new B("black", "demo");
objB.AshowColor();
objB.BshowName();
document.writeln("----------------");