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(1)伪数组的特点: 1 必须要有length属性 2 如果length属性值是0,那么这个对象有没有元素无所谓; 3 如果length属性值不是0,那么这个对象一定有(length-1)为下标的属性值; // 是伪装组 var obj = { length: 0 }; var obj = { le 阅读全文
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<!DOCTYPE html> <html> <head lang="en"> <meta charset="UTF-8"> <title></title> <style> * { margin: 0; padding: 0; } .box { width: 350px; height: 350px 阅读全文
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<!DOCTYPE html> <html> <head lang="en"> <meta charset="UTF-8"> <title></title> <style> body { height: 5000px; } img { position: absolute; padding: 10p 阅读全文
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<!DOCTYPE html> <html> <head lang="en"> <meta charset="UTF-8"> <title></title> <style> * { margin: 0; padding: 0; } body,html { height: 100%; } ul { l 阅读全文
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<!DOCTYPE html> <html> <head lang="en"> <meta charset="UTF-8"> <title></title> <style> * { margin: 0; padding: 0; } body { background: rgba(0, 0, 0, 0 阅读全文
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//缓动动画封装 function animate(ele,target) { clearInterval(ele.timer); ele.timer = setInterval(function () { var step = (target-ele.offsetTop)/10; step = s 阅读全文
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<!DOCTYPE html> <html> <head lang="en"> <meta charset="UTF-8"> <title></title> <style> * { margin: 0; padding: 0 } /*img {*/ /*vertical-align: top;*/ 阅读全文
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<!DOCTYPE html> <html> <head lang="en"> <meta charset="UTF-8"> <title></title> <style> div { width: 100px; height: 100px; padding: 10px; margin: 10px; 阅读全文
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.o 阅读全文