How to implement random display of advertisements on Javascript static pages_javascript skills

First, to generate non-repeating random numbers within n and put the generated random numbers into another Array, use the following method to complete:

Copy code The code is as follows:

function getRandomNumbers(count)
{
var numbers = new Array();
var original = new Array() ;
for (var i=0;i{
original[i] = i 1;
}
original.sort(function(){ return 0.5 - Math.random(); });
for (var i=0;i{
numbers[i] = original[i] - 1;
}
return numbers;
}

Then, in the background program, output the html script:

Copy code The code is as follows:

var sf = new Array();
sf[0]='Server nameServer IPOpening timeLine categoryVersion introductionCustomer Service QQDetailed Introduction< /TD>';
sf[1]='Server nameServer IPOpening Time< /TD>Line CategoryVersion IntroductionCustomer Service QQDetails';

Use the previous method to generate random numbers and display the html script according to the random numbers.

Copy code The code is as follows:

var numbers = getRandomNumbers(sf.length);
for( i=0;i{
document.write(sf[numbers[i]]);
}