JS基础之运算符

// 比较运算符
// ===  等同于 和 !==
var a = 5;
var astr = '5';
var isequal1 = a === astr;
console.log(isequal1);
// == 等于  和!= 不等于
var isequal2 = a == astr;
console.log(isequal2);
console.log(4 <= 4);