[英]Javascript to change attribute under CSS
document.getElementById("Id1").style. document.getElementById(“ Id1”)。style。 backgroundImage = "url(value)";
backgroundImage =“ url(value)”;
to change the background image attribute in the CSS. 更改CSS中的背景图片属性。 But, the attribute used in CSS is
但是,CSS中使用的属性是
background-Image
背景图
Why we can't use the same name under Javascript as document.getElementById("Id1").style. 为什么我们不能在Javascript下使用与document.getElementById(“ Id1”)。style相同的名称。 background-Image = "url(value)";
background-Image =“ url(value)”;
As @Bitwise Creative said, you can't use -
out of string. 正如@Bitwise Creative所说,您不能使用
-
字符串不足。 Instead you can do this, 相反,您可以这样做,
document.getElementById("Id1").style["background-image"] = "url(value)";
If you use document.getElementById("Id1").style.background-Image = "url(value)", what will happen means javascript consider as statement before '-' "document.getElementById("Id1").style.background" and image consider as variable. 如果您使用document.getElementById(“ Id1”)。style.background-Image =“ url(value)”,将发生的情况意味着javascript将考虑作为'-'“ document.getElementById(” Id1“)。style.background之前的语句”,并且图片被视为变量。 So you will get syntax error
所以你会得到语法错误
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