变量a=[1,2,3];a.推动(4,5);控制台.log(a);
变量a=[1,2,3];a.推动(4,5);控制台.log(a);
变量a=[1,2,3];a.卸载(4、5);控制台.log(a);
变量a=[1,2,3];a.卸载(4、5);控制台.log(a);
var arr1=[“a”,“b”,“c”];var arr2=[“d”,“e”,“f”];var arr3=arr1.concat(arr2);控制台.log(arr3);
var arr1=[“a”,“b”,“c”];var arr2=[“d”,“e”,“f”];var arr3=arr1.concat(arr2);控制台.log(arr3);
var ar=['one','two','three'];ar[ar.length]=“四个”;console.log(ar);
var ar=['one','two','three'];ar[ar.length]=“四个”;console.log(ar);
var myFish=[“天使”,“小丑”,“普通话”,“外科医生”];myFish.拼接(4,0,“nemo”);//数组.splice(start,deleteCount,item1,item2,…)console.log(myFish);
var myFish=[“天使”,“小丑”,“普通话”,“外科医生”];myFish.splice(4,0,“nemo”);//数组.splice(start,deleteCount,item1,item2,…)console.log(myFish);
var ar=['one','two','three'];ar[3]=“四”;//向ar添加新元素console.log(ar);
var ar=['one','two','three'];ar[3]=“四”;//向ar添加新元素console.log(ar);