dealArray(arr, obj) {
Array.prototype.S = String.fromCharCode(2);
Array.prototype.in_array = function(e) {
var r = new RegExp(this.S + e + this.S);
return r.test(this.S + this.join(this.S) + this.S);
};
return arr.in_array(obj);
},
console.log(this.dealArray([1,1,12,34,3],34));//輸出結果:true
console.log(this.dealArray([1,1,12,34,3],4));//輸出結果:false