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<title>Document</title>
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$(function () {
// 操作方法1(设置属性): css(json);
$('div').css({"width": 100, "height": 100, "background-color": 'red'})
// 操作方法2(设置属性): css(属性，值);
$('div').css("background-color", 'yellow');
// 操作方法3(获取属性): css(属性);
console.log($('div').css("width"));
})
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