for.js

来自「这是《JavaScript学习源代码》一书的源代码」· JavaScript 代码 · 共 9 行

var a = 0, b = 0;
// initialize counter at zero then loop until it hits 5
for( var i = 0; i < 5; i++ )
{
  // increment variable values on each iteration
  a += 10; b += 5;
}
// display the final values after the loop ends...
alert( "FOR LOOP\n\n A is " + a + "... B is " + b );