String.prototype.bool = function() {
return (/^true$/i).test(this);
};
console.log("true".bool());
var hasAuth = 'true' === 'true' ;
console.log(hasAuth);//true
var hasAuth = 'false' === 'true' ;
console.log(hasAuth);//false
下面的所有的代碼行均會(huì)創(chuàng)建初始值為 false 的 Boolean 對(duì)象茧彤。
var myBoolean=new Boolean();
var myBoolean=new Boolean(0);
var myBoolean=new Boolean(null);
var myBoolean=new Boolean("");
var myBoolean=new Boolean(false);
var myBoolean=new Boolean(NaN);
下面的所有的代碼行均會(huì)創(chuàng)初始值為 true 的 Boolean 對(duì)象：
var myBoolean=new Boolean(1);
var myBoolean=new Boolean(true);
var myBoolean=new Boolean("true");
var myBoolean=new Boolean("false");
var myBoolean=new Boolean("Bill Gates");
