英文:
How to find element and add class in selenium js?
问题
我尝试在JavaScript中使用classList.add方法，但没有成功 😞
await driver.findElement(By.css(".promotion-code-group.promo-shown .promo-selector")).classList.add("show");
TypeError: 无法读取未定义的属性 'add'
我需要你在Selenium JavaScript方面的知识，希望你们可以指导我。提前感谢你们！
英文:
How can we perform add class to a specific element?
I tried classList.add method in javascript but no luck 😞
await driver.findElement(By.css(".promotion-code-group.promo-shown .promo-selector")).classList.add("show");
TypeError: Cannot read property 'add' of undefined
I need your knowledge in selenium js I hope you guys can guide me through this. Thank you guys in advance!
答案1
得分: 1
你可以使用execute_script()函数编辑一个元素的类列表。
在setAttribute()的第二个参数中，你应该放入现有的类以及新添加的类：
const element = await driver.findElement(
By.css(".promotion-code-group.promo-shown.promo-selector")
);
await driver.execute_script(
"arguments[0].setAttribute('class', 'promotion-code-group promo-shown show')",
element
);
英文:
You can edit an element's class list using execute_script() function.
In the second argument in setAttribute() you should put existing classes plus the new ones:
const element = await driver.findElement(
By.css(".promotion-code-group.promo-shown promo-selector")
);
await driver.execute_script(
"arguments[0].setAttribute('class', 'promotion-code-group promo-shown show')",
element
);
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