Code Snippet: Remove Filename Extension (3 different methods)

Remove Filename Extension.jsx

/* Remove Filename Extension (4 different methods) */

var baseName = app.activeDocument.name.split('.')[0];

// or for multiple period characters

var extensionIndex = activeDocument.name.lastIndexOf(".");
if (extensionIndex != -1) {
    var baseName = activeDocument.name.substr(0, extensionIndex);
    alert(baseName);
} else {
    alert(activeDocument.name);
}

// or for multiple period characters

var docName = activeDocument.name.split('.');
docName.length --;
docName = docName.join('.');
alert(docName);

// or for multiple period characters

var baseName = app.activeDocument.name.replace(/\.[^\.]+$/, '');