我有以下JavaScript变量:
var fontsize = "12px"
var left= "200px"
var top= "100px"
我知道我可以像这样迭代地将它们设置为我的元素:
document.getElementById("myElement").style.top=top
document.getElementById("myElement").style.left=left
有没有可能把它们都放在一起，就像这样?
document.getElementById("myElement").style = allMyStyle
当前回答
参见…在
例子:
var myStyle = {};
myStyle.fontsize = "12px";
myStyle.left= "200px";
myStyle.top= "100px";
var elem = document.getElementById("myElement");
var elemStyle = elem.style;
for(var prop in myStyle) {
elemStyle[prop] = myStyle[prop];
}
其他回答
参见…在
例子:
var myStyle = {};
myStyle.fontsize = "12px";
myStyle.left= "200px";
myStyle.top= "100px";
var elem = document.getElementById("myElement");
var elemStyle = elem.style;
for(var prop in myStyle) {
elemStyle[prop] = myStyle[prop];
}
因为字符串支持添加，你可以很容易地添加你的新样式，而不需要覆盖当前的样式:
document.getElementById("myElement").style.cssText += `
font-size: 12px;
left: 200px;
top: 100px;
`;
在Javascript中设置多个css样式属性
document.getElementById("yourElement").style.cssText = cssString;
or
document.getElementById("yourElement").setAttribute("style",cssString);
例子:
document
.getElementById("demo")
.style
.cssText = "margin-left:100px;background-color:red";
document
.getElementById("demo")
.setAttribute("style","margin-left:100px; background-color:red");
<button onclick="hello()">Click!</button>
<p id="demo" style="background: black; color: aliceblue;">
hello!!!
</p>
<script>
function hello()
{
(document.getElementById("demo").style.cssText =
"font-size: 40px; background: #f00; text-align: center;")
}
</script>
您可以在css文件中拥有单独的类，然后将类名分配给元素
或者你可以循环样式的属性为-
var css = { "font-size": "12px", "left": "200px", "top": "100px" };
for(var prop in css) {
document.getElementById("myId").style[prop] = css[prop];
}
