更改按钮的颜色单击引导程序

我想在点击时更改按钮的颜色.我是在蓝色的Bootstrap按钮上进行的.但我的代码不起作用.

使用我的JavaScript代码,它不会改变颜色.

Organization Units 


Chiefdom


District 


Facility 

这是javascirpt代码:

var b1 = document.getElementById("btnOUS");
var b2 = document.getElementById("btnchiefdom");
var b2 = document.getElementById("btndistrict");
var b2 = document.getElementById("btnfacility");

b1.onclick = function() {
     b1.style.background = "green";
     b2.style.background = "";   
}

b2.onclick = function() {
     b1.style.background = "";
     b2.style.background = "green";   
}

b2.onclick = function() {
     b1.style.background = "";
     b2.style.background = "green";   
}
b2.onclick = function() {
     b1.style.background = "";
     b2.style.background = "green";   
}

Gilberto Sán.. 8

看到这个功能示例:

$("button").click(function(){
  $("button").removeClass("active");
  $(this).addClass("active");
});

.active {
  background-color: green !important;
}

Organization Unitss 
            Chiefdom
            District 
            Facility 

$("button").click(function(){
  $("button").removeClass("active");
  $(this).addClass("active");
});

.active {
  background-color: green !important;
}

Organization Unitss 
            Chiefdom
            District 
            Facility