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User:机智的小鱼君/common.js
From Project-EPB Commons
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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;
}
var a = ['this is 1','this is 2','this is 3'];
alert( 'now random: '+ getArrItem(a,1) );
