JavaScript两个数组是否有相同元素

tips:
在 JavaScript 里，null，0，””，false，和 undefined 全部彼此相等(==)，因为它们的计算值都为 ‘false。

TNMS.flow.traph.dispatch.maintain.L2vpnInfoModifyPanel

repeatable:function(arr1,arr2,tag1,tag2,callback){
	if(arr1.length !=0 && arr2.length !=0){
		arr1 = arr1.split(',');
		arr2 = arr2.split(',');
		var tempArray = [];
		for(var i=0;i<arr1.length;i++){
			tempArray[arr1[i]] = true;
		}
		for(var i=0;i<arr2.length;i++){
			if(tempArray[arr2[i]]){
				Ext.Msg.alert("温馨提示",tag1+"和"+tag2+"存在冲突，请检查并重新选择！");
				callback.call(this);
				return;
			}
		}
	}
},
save:function(callback){
	var scope = this;
	var res = this.getResult();
	// 输入校验
	var orig_ne = res.baseForm['RELATED_ORIG_NE_CUID'];
	var dest_ne_a = res.baseForm['RELATED_DEST_NE_A_CUID'];
	var dest_ne_b = res.baseForm['RELATED_DEST_NE_B_CUID'];
	if (orig_ne == dest_ne_a || orig_ne == dest_ne_b){
		Ext.Msg.alert("温馨提示","源端网元和宿端网元不能相同，请重新选择！");
		callback.call(scope);
		return;
	}
	var a1 = res.dniConstraint['MUST_WORK_LINK'];
	var a2 = res.dniConstraint['MUST_PROTECT_LINK'];
	var a3 = res.dniConstraint['FORBIT_WORK_LINK'];
	var a4 = res.dniConstraint['FORBIT_PROTECT_LINK'];
	this.repeatable(a1,a3,'必经链路列表（工作）','禁止链路列表（工作）',callback);
	this.repeatable(a2,a4,'必经链路列表（保护）','禁止链路列表（保护）',callback);
	var b1 = res.wireConstraint['WIRE_MUST_WORK_NE'];
	var b2 = res.wireConstraint['WIRE_MUST_PROTECT_NE'];
	var b3 = res.wireConstraint['WIRE_FORBIT_WORK_NE'];
	var b4 = res.wireConstraint['WIRE_FORBIT_PROTECT_NE'];
	this.repeatable(b1,b3,'必经节点列表（工作）','禁止节点列表（工作）',callback);
	this.repeatable(b2,b4,'必经节点列表（保护）','禁止节点列表（保护）',callback);
	var c1 = res.wireConstraint['WIRE_MUST_WORK_TOPO'];
	var c2 = res.wireConstraint['WIRE_MUST_PROTECT_TOPO'];
	var c3 = res.wireConstraint['WIRE_FORBIT_WORK_TOPO'];
	var c4 = res.wireConstraint['WIRE_FORBIT_PROTECT_TOPO'];
	this.repeatable(c1,c3,'必经链路列表（工作）','禁止链路列表（工作）',callback);
	this.repeatable(c2,c4,'必经链路列表（保护）','禁止链路列表（保护）',callback);
	L2vpnMaintainDwrAction.save(Ext.encode(res),function(){
		if(Ext.isFunction(callback)){
			callback.call(scope);
		}
	});
},