1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 2 <html xmlns="http://www.w3.org/1999/xhtml"> 3 <head> 4 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> 5 <title>数组练习：各种数组方法的使用</title> 6 <style> 7 div{color:green;padding:10px 15px;margin:12px 0;background:#f0f0f0;border:1px dotted #333;font:12px/1.5 Courier New;word-wrap:break-word;} 8 </style> 9 <script type="text/javascript"> 10 window.onload = function () 11 { 12 var aDiv = document.getElementsByTagName("div"); 13 var aInput = document.getElementsByTagName("input"); 14 var i = 0; 15 var bS1 = bS2 = true; 16 var aTmp = []; 17 18 //删除/添加第一项 19 aInput[0].onclick = function () 20 { 21 aTmp = getArray(aDiv[0].innerHTML); 22 bS1 ? 23 //删除第一项， shift()方法 24 (aTmp.shift(), this.value = this.value.replace("删除","添加"), bS1 = false) : 25 //添加第一项, unshift()方法 26 (aTmp.unshift("January(1)"), this.value = this.value.replace("添加","删除"), bS1 = true); 27 //输出 28 aDiv[0].innerHTML = aTmp.join() 29 }; 30 31 //删除/添加最后一项 32 aInput[1].onclick = function () 33 { 34 aTmp = getArray(aDiv[0].innerHTML); 35 bS2 ? 36 //删除最后一项, pop()方法 37 (aTmp.pop(), this.value = this.value.replace("删除","添加"), bS2 = false) : 38 //添加最后一项, push()方法 39 (aTmp.push("December(12)"), this.value = this.value.replace("添加","删除"), bS2 = true); 40 //输出 41 aDiv[0].innerHTML = aTmp.join() 42 }; 43 44 //复制, concat()方法 45 aInput[2].onclick = function () 46 { 47 aTmp = getArray(aDiv[1].innerHTML); 48 //输出 49 aDiv[1].innerHTML = aTmp.concat(aTmp).toString().replace(/\s/g,"") 50 }; 51 52 //还原, 利用数组的 length 特点 53 aInput[3].onclick = function () 54 { 55 aTmp = getArray(aDiv[1].innerHTML); 56 //设置数组长度 57 aTmp.length = 10; 58 //输出 59 aDiv[1].innerHTML = aTmp.join() 60 }; 61 62 63 //第三组数据还原 64 aInput[4].onclick = function () 65 { 66 aTmp = ["red","green","blue","white","yellow","black","brown"]; 67 //输出 68 aDiv[2].innerHTML = aTmp.join() 69 }; 70 71 //删除前三项 72 aInput[5].onclick = function () 73 { 74 aTmp = getArray(aDiv[2].innerHTML); 75 //删除, 0开始, 删除3个 76 aTmp.splice(0, 3); 77 //输出 78 aDiv[2].innerHTML = aTmp.join() 79 }; 80 81 //删除第二至三项 82 aInput[6].onclick = function () 83 { 84 aTmp = getArray(aDiv[2].innerHTML); 85 //删除, 2开始, 删除2个 86 aTmp.splice(1, 2); 87 //输出 88 aDiv[2].innerHTML = aTmp.join() 89 }; 90 91 //在第二顶后插入"orange", "purple" 92 aInput[7].onclick = function () 93 { 94 aTmp = getArray(aDiv[2].innerHTML); 95 //插入, 2开始, 插入"orange", "purple" 96 aTmp.splice(1, 0, "orange", "purple"); 97 //输出 98 aDiv[2].innerHTML = aTmp.join() 99 }; 100 101 102 103 //替换第二项和第三项 104 aInput[8].onclick = function () 105 { 106 aTmp = getArray(aDiv[2].innerHTML); 107 //插入, 2开始替换 108 aTmp.splice(1, 2, "#009900", "#0000ff"); 109 //输出 110 aDiv[2].innerHTML = aTmp.join() 111 }; 112 113 //将div中的内容转为数组 114 //str div对象 115 function getArray(str) 116 { 117 aTmp.length = 0; 118 str = str.split(","); 119 for (var i in str)aTmp.push(str[i]); 120 return aTmp 121 } 122 } 123 </script> 124 125 </head> 126 <body> 127 <div>January(1),February(2),March(3),April(4),May(5),June(6),July(7),Aguest(8),September(9),October(10),November(11),December(12)</div> 128 <input type="button" value="删除January(1)" /> 129 <input type="button" value="删除December(12)" /> 130 <div>0,1,2,3,4,5,6,7,8,9</div> 131 <input type="button" value="复制" /> 132 <input type="button" value="还原" /> 133 <div>red,green,blue,white,yellow,black,brown</div> 134 <input type="button" value="还原" /> 135 <input type="button" value="删除前三项" /> 136 <input type="button" value="删除第二至三项" /> 137 <input type="button" value="在第二项后插入(orange, purple)" /> 138 <input type="button" value="替换第二项和第三项" /> 139 </body> 140 </html>