如何在selenium中使用多行脚本来执行脚本

Question

我正在使用 selenium 的 driver.execute_script 函数在页面上部署一些 JavaScript。

我准备了 JavaScript，但如果我将代码放入另一行，如下所示：

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

它给了我一个错误。我也尝试过这样做：

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

但这给了我同样的错误。

Answer 1

要构建多行脚本，您可以借助三引号ie """ ... """。

execute_script()这是通过使用Selenium调用的多行脚本的示例：

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)

您可以将该方法调用为：

wheel_element(elm, -120)