1,验证特殊符号字符串
function checkOtherChar(str){
//定义一个特殊符号的数组
var arr = ["*","&",">","<","$","\\""/",];
//循环比较数组中字符与字符串中每个字符
for(var i=0;i
2,取得某一范围的随机数
function getRandom(min,max){
//随机数
var random = Math.random()*(max - min) + min;
//向下取整
random = Math.floor(random);
return random;
}