tools.js 1.0 KB

123456789101112131415161718192021222324252627282930313233
  1. export function deepExtend (){
  2. var obj1 = arguments[0];
  3. var obj2 = arguments[1];
  4. //存放结果对象
  5. var resObj = {};
  6. if(typeof(obj1) != 'object' || typeof(obj2) != 'object'){
  7. console.warn('Not object');
  8. return
  9. }
  10. //遍历obj1的所有属性
  11. for(var i in obj1){
  12. //如果对象2里面有对象1的这个属性则继承过来,否则resObj放obj1[i]
  13. if(obj2.hasOwnProperty(i)){
  14. if(typeof(obj1[i]) == 'object'){
  15. //如果obj1[i]是一个对象,那么递归调用这个方法,并把resObj[i]的属性设置为结果
  16. resObj[i] = deepExtend(obj1[i],obj2[i])
  17. }else{
  18. resObj[i] = obj2[i];
  19. }
  20. }else{
  21. resObj[i] = obj1[i];
  22. }
  23. }
  24. for(var j in obj2){
  25. //上一步已经把obj1和obj2共有的属性全替换为obj2的属性,所以这里只需把obj1里不具有的obj2的属性复制即可
  26. if(!obj1.hasOwnProperty(j)){
  27. resObj[j] = obj2[j];
  28. }
  29. }
  30. return resObj
  31. }