more.js

来自「这是《JavaScript学习源代码》一书的源代码」· JavaScript 代码 · 共 18 行

var a = new Array( 1, 2, 3 );

// insert an integer into the next empty element

a[ a.length ] = 4;              // a.length is 3

var b = new Array( 5, 6, 7 );

// copy each b element value into the empty a elements

for(var i = 0; i < b.length; i++ )
{
  a[a.length] = b[i];  
}

// display all a element values

alert( a );