javascript中使用css需要注意的地方小結

2019-11-21 00:16:07

字體：大中小

來源：轉載

供稿：網友

1.在改變單個元素樣式時，注意style對象的語法和css中使用的語法幾乎是一一對應的。不過包含連字符的屬性則被替換為一種“camel castring”的形式，例如：font-size現在成了fontSize，而margin-top變成了marginTop；
2.在使用“float”時，因為“float”是javascript的一個保留字，所以就不能使用style.float，而改成了style.cssFloat(IE使用的是style.styleFloat)；
3. 獲得元素的計算樣式:
在W3C DOM下可以：

復制代碼代碼如下:

 
var heading = document.getElementById("heading"); 
var computedStyle = document.defaultView.getComputedStyle(heading,null); 
var computedFontFamily = computedStyle.fontFamily;//sans-serif 

IE不支持使用DOM標準方法，可以：

復制代碼代碼如下:

 
var heading = document.getElementById("heading"); 
var computedFontFamily = heading.currentStyle.fontFamily;//sans-serif 

綜合上述這些方法，可以創建一個跨瀏覽器函數來實現

復制代碼代碼如下:

 
function retrieveComputedStyle(element,styleProperty){ 
var computedStyle = null; 
if(typeof element.currentStyle != "undefined"){ 
computedStyle = element.currentStyle; 
}else{ 
computedStyle = document.defaultView.getComputedStyle(element,null); 
} 
return computedStyle[styleProperty]; 
} 

對照表

CSS Properties To JavaScript Reference Conversion

CSS Property	JavaScript Reference
background	background
background-attachment	backgroundAttachment
background-color	backgroundColor
background-image	backgroundImage
background-position	backgroundPosition
background-repeat	backgroundRepeat
border	border
border-bottom	borderBottom
border-bottom-color	borderBottomColor
border-bottom-style	borderBottomStyle
border-bottom-width	borderBottomWidth
border-color	borderColor
border-left	borderLeft
border-left-color	borderLeftColor
border-left-style	borderLeftStyle
border-left-width	borderLeftWidth
border-right	borderRight
border-right-color	borderRightColor
border-right-style	borderRightStyle
border-right-width	borderRightWidth
border-style	borderStyle
border-top	borderTop
border-top-color	borderTopColor
border-top-style	borderTopStyle
border-top-width	borderTopWidth
border-width	borderWidth
clear	clear
clip	clip
color	color
cursor	cursor
display	display
filter	filter
font	font
font-family	fontFamily
font-size	fontSize
font-variant	fontVariant
font-weight	fontWeight
height	height
left	left
letter-spacing	letterSpacing
line-height	lineHeight
list-style	listStyle
list-style-image	listStyleImage
list-style-position	listStylePosition
list-style-type	listStyleType
margin	margin
margin-bottom	marginBottom
margin-left	marginLeft
margin-right	marginRight
margin-top	marginTop
overflow	overflow
padding	padding
padding-bottom	paddingBottom
padding-left	paddingLeft
padding-right	paddingRight
padding-top	paddingTop
page-break-after	pageBreakAfter
page-break-before	pageBreakBefore
position	position
float	styleFloat
text-align	textAlign
text-decoration	textDecoration
text-decoration: blink	textDecorationBlink
text-decoration: line-through	textDecorationLineThrough
text-decoration: none	textDecorationNone
text-decoration: overline	textDecorationOverline
text-decoration: underline	textDecorationUnderline
text-indent	textIndent
text-transform	textTransform
top	top
vertical-align	verticalAlign
visibility	visibility
width	width
z-index	zIndex