subtr help

[MDanz]

var example = document.getElementById(number).value;
var exampleid = "example"+number;
document.getElementById(exampleid).innerHTML = example;

 

i only want the variable 'example' to be 12 characters long then followed by three fullstops.

How do i do this?

[Adam]

You made a typo, but you answered that yourself: .substr(). What have you tried so far?

[MDanz]

i tried this not working it should limit 'example' to 12 characters

 

var example = document.getElementById(number).value;
var exampleid = "example"+number;
var example2 = example.substring(0,12);

if(example2.length==12){
var example3 = example+"...";
} else {
var example3 = example;
}
document.getElementById(exampleid).innerHTML = example3;

[Adam]

Ah, think you just needed to think simpler. Try this:

 

var example = document.getElementById(number).value;
var exampleid = example+number;

if (example.length >= 12) {
    example = example.substr(0, 12) + '...';
}

document.getElementById(exampleid).innerHTML = example;

 

Key being the operator used, ">=" not "==".

 

Edit: removed the quotes in the "exampleid" declaration.