Counting the number of lines in a text field using JavaScript

Forum|Forum|3 years ago
February 11, 2022
2 replies
4133 views

Hi

Using JavaScript how can I count the number of lines in a text field including lines created as a result of wrapped text.

This topic has been closed for replies.

try67

Adobe Expert

There's no built-in way to do it. You will need to write a custom function to calculate the length of the text based on the font, font size and the characters used in it.

S

SamKhaMAuthor

Known Participant

Could you please provide me with a sample code that calculates the length of the text based on the font, font size and the characters used in it. I am using Font "Calibri" size 11

try67

Adobe Expert

No, you will need to write it yourself, or hire someone to do it for you.

JoãoCésar17023019

Inspiring

Hi.

Have you tried the getMetrics method?

For example:

console.log(this.yourTextField.getMetrics().lines.length);

Please let us know.

Regards,

JC

S

SamKhaMAuthor

Known Participant

I did not try this function before. Please could your proivide with a sample script using this fuction to call from a Button. I tried the following code and it did not work.

var txtField=this.getField("Labels");

app.alert(txtField.getMetrics().lines.length);

I received the following error:

TypeError: txtField.getMetrices is not function

JoãoCésar17023019

Inspiring

Of course.

Here it is:

var _this = this;

_this.yourButton.on("click", function()
{
	console.log(_this.yourTextField.getMetrics().lines.length);
});

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