User:机智的小鱼君/common.js

mw.loader.load('https://common.wjghj.cn/js/InPageEdit-v2');

function getArrItem(arr, num) {
  var temp_array = new Array();
  for (var index in arr) {
    temp_array.push(arr[index]);
  }
  var return_array = new Array();
  for (var i = 0; i < num; i++) {
    if (temp_array.length > 0) {
      var arrIndex = Math.floor(Math.random() * temp_array.length);
      return_array[i] = temp_array[arrIndex];
      temp_array.splice(arrIndex, 1);
    } else {
      break;
    }
  }
  return return_array;
}
function randomBg() {
  new mw.Api().get({
    action: 'parse',
    page: 'MediaWiki:Custom-RandomBackground/List',
    prop: 'wikitext',
    format: 'json'
  }).done(function(data) {
    var wikitext = data.parse.wikitext['*'],
    arr = wikitext.split('\n\#RandomBackgroundList\#');
    arr = arr[1].split('\*RandomBackgroundImg\*');
    delete arr[0];
 
    $('#firstHeading').after('url(' + getArrItem(arr,1) + ')');
 
  });
}
$(function(){
randomBg();
$('#firstHeading').click(randomBg)
});