How do I use multi line scripts in selenium to execute a script

Question

I am deploying some JavaScript on a page with selenium's driver.execute_script function.

I prepare my JavaScript but if I drop the code into another line like so:

script = 'line one code' +
         'line two code'
driver.execute_script(script)

It gives me an error. I've also tried doing:

script = [
    'line one code',
    'line two code'
]
script = ';'.join(script)

But that gave me same error.

undetected Selenium · Accepted Answer · 2019-03-27 07:52:09Z

5

To construct a multi-line script, you can take help of the triple quotes i.e. """ ... """.

Here is a example of multi-line script which is invoked through execute_script() using Selenium:

def wheel_element(element, deltaY = 120, offsetX = 0, offsetY = 0):
  error = element._parent.execute_script("""
    var element = arguments[0];
    var deltaY = arguments[1];
    var box = element.getBoundingClientRect();
    var clientX = box.left + (arguments[2] || box.width / 2);
    var clientY = box.top + (arguments[3] || box.height / 2);
    var target = element.ownerDocument.elementFromPoint(clientX, clientY);

    for (var e = target; e; e = e.parentElement) {
      if (e === element) {
        target.dispatchEvent(new MouseEvent('mouseover', {view: window, bubbles: true, cancelable: true, clientX: clientX, clientY: clientY}));
        target.dispatchEvent(new MouseEvent('mousemove', {view: window, bubbles: true, cancelable: true, clientX: clientX, clientY: clientY}));
        target.dispatchEvent(new WheelEvent('wheel',     {view: window, bubbles: true, cancelable: true, clientX: clientX, clientY: clientY, deltaY: deltaY}));
        return;
      }
    }    
    return "Element is not interactable";
    """, element, deltaY, offsetX, offsetY)

You can call the method as:

wheel_element(elm, -120)

edited Mar 27, 2019 at 7:52

answered Mar 27, 2019 at 7:43

undetected Selenium

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2 Comments

The Dan Over a year ago

In the case of executing the Script for driver.execute_script(), is it different? I see you are doing it into an element

portal TheAnGeLs Over a year ago

Triple quotes didn't work for me (Selenium, NodeJs, webdriver) so I have to put code into this quotation code . These special quotes ( ` ) worked for me only.

Guy · Accepted Answer · 2019-03-27 07:30:05Z

0

Add \ after the + sign

script = 'line one code ' + \
         'line two code'

Or use round brackets

script = ('line one code '
          'line two code')

answered Mar 27, 2019 at 7:30

Guy

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