static class in es6 code example

Example 1: typescript static class equivalent

//Example of Typescript static class equivalent
export abstract class Tools {   
  public static truncate(str, length) { 
    var ending = '...'; 
    if (str.length > length) { 
      return str.substring(0, length - ending.length) + ending; 
    } else { 
      return str; 
    } 
  }; 
}

Example 2: js class static function

class myClass{
 
constructor(){
this.myLocaleVariable=1;//this.varname in the constructer function makes a locale var
}
localfunction(){
return "im local unique to this variable";
}
static publicfunction(){
return "i can be called without an obj"
}
  
}
myClass.myPublicVariable = 0;



myClass.localfunction();//error
myClass.publicfunction();//"i can be called without an obj"
myClass.myLocaleVariable;//error
myClass.myPublicVariable;//0
var obj = new myClass;
obj.localfunction();//"im local unique to this variable"
obj.publicfunction();//error
obj.myLocaleVariable;//1
obj.myPublicVariable;//error