CODEWITHSUNDEEP
javascript
crchin
crchin

Reputation: 9683

auto fired the text field once the value reach the certain length

Now I am developing a bar code based attendance system . Any there any javascript event can solve once the text field has detected the value has 10 characters, the text field will be fired and i can able to get the value.

Is there any solution ?

Upvotes: 0

Views: 122

Answers (2)

Abhidev
Abhidev

Reputation: 7273

you can check the length of the text input box value on every keypress and make a function call when its the 10th character.

Upvotes: 0

James Allardice
James Allardice

Reputation: 166071

I'm not sure what you mean by "the text field will be fired", but you can find out when the 10th character is entered by binding to the keyup event:

document.getElementById("example").onkeyup = function() {
    if(this.value.length === 10) {
        console.log("ok");  
    } 
};

It would be better to use addEventListener or attachEvent rather than setting the onkeyup property, but I'll leave that up to you.

Here's a working example.

Upvotes: 2

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