在JavaScript中生成一个随机的字母数字(大写,小写和数字)字符串来用作可能唯一的标识符的最短方法是什么?
当前回答
使用md5库:https://github.com/blueimp/JavaScript-MD5
最短的方法:
md5(随机数学。()
如果你想限制大小为5:
md5 (math . random())。substr (0, 5)
其他回答
随机字符:
String.fromCharCode(i); //where is an int
随机整数:
Math.floor(Math.random()*100);
把它们放在一起:
function randomNum(hi){
return Math.floor(Math.random()*hi);
}
function randomChar(){
return String.fromCharCode(randomNum(100));
}
function randomString(length){
var str = "";
for(var i = 0; i < length; ++i){
str += randomChar();
}
return str;
}
var RandomString = randomString(32); //32 length string
小提琴:http://jsfiddle.net/maniator/QZ9J2/
很好,很简单,而且不局限于一定数量的字符:
let len = 20, str = "";
while(str.length < len) str += Math.random().toString(36).substr(2);
str = str.substr(0, len);
使用md5库:https://github.com/blueimp/JavaScript-MD5
最短的方法:
md5(随机数学。()
如果你想限制大小为5:
md5 (math . random())。substr (0, 5)
beans建议的另一种答案变体
(Math.random()*1e32).toString(36)
通过改变乘数1e32,你可以改变随机字符串的长度。
这是一个简单的代码来生成随机字符串字母。 看看这段代码是如何工作的。 去(lenthOfStringToPrint);-使用此函数生成最终字符串。
var letters = {
1: ["q","w","e","r","t","y","u","i","o","p","a","s","d","f","g","h","j","k","l","z","x","c","v","b","n","m"],
2: ["Q","W","E","R","T","Y","U","I","O","P","A","S","D","F","G","H","J","K","L","Z","X","C","V","B","N","M"]
},i,letter,final="";
random = (max,min) => {
return Math.floor(Math.random()*(max-min+1)+min);
}
function go(length) {
final="",letter="";
for (i=1; i<=length; i++){
letter = letters[random(0,3)][random(0,25)];
final+=letter;
}
return final;
}