Autogenerate Password (random string)

[hm.Stephan]

Hello,

When opening a document, I would like to automatically fill a text field with random text (password generator).
Unfortunately I don't find much about it and my approach seems completely wrong 😞

I hope someone can help me out here 🙂

Here is my code:

function start_kundenkennwort_gen() {

//var randomstring = this.getField("kd_kundenkennwort");

var chars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXTZabcdefghiklmnopqrstuvwxyz";
var string_length = 8;
var randomstring = '';
for (var i=0; i<string_length; i++) {
var rnum = Math.floor(Math.random() * chars.length);
randomstring += chars.substring(rnum,rnum+1);
}

document.randform.kd_kundenkennwort.value = randomstring;
}

[try67 · Accepted solution]

Use this code:

var chars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXTZabcdefghiklmnopqrstuvwxyz";
var string_length = 8;
var randomstring = '';
for (var i=0; i<string_length; i++) {
	var rnum = Math.floor(Math.random() * chars.length);
	randomstring += chars.substring(rnum,rnum+1);
}
this.getField("kd_kundenkennwort").value = randomstring;

[try67 · Accepted solution]

Use this code:

var chars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXTZabcdefghiklmnopqrstuvwxyz";
var string_length = 8;
var randomstring = '';
for (var i=0; i<string_length; i++) {
	var rnum = Math.floor(Math.random() * chars.length);
	randomstring += chars.substring(rnum,rnum+1);
}
this.getField("kd_kundenkennwort").value = randomstring;

[hm.Stephan]

@try67 you are my hero. It works - thank you so much.

[hm.Stephan]

Can you adapt the script so that it only generates the password once per document?

[try67 · Accepted solution]

Sure. Change the last line to:

if (this.getField("kd_kundenkennwort").valueAsString=="")

     this.getField("kd_kundenkennwort").value = randomstring;