JavaScript數組各種常見用法執行個體分析，javascript執行個體分析

JavaScript數組各種常見用法執行個體分析，javascript執行個體分析

本文執行個體講述了JavaScript數組各種常見用法。分享給大家供大家參考。具體如下：

運行效果如所示：

具體代碼如下：

<!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.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>javascript各種數組方法的使用</title><style> 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;}</style><script type="text/javascript"> window.onload = function (){  var aDiv = document.getElementsByTagName("div");  var aInput = document.getElementsByTagName("input");  var i = 0;  var bS1 = bS2 = true;  var aTmp = [];  //刪除/添加第一項  aInput[0].onclick = function ()  {    aTmp = getArray(aDiv[0].innerHTML);    bS1 ?    //刪除第一項， shift()方法    (aTmp.shift(), this.value = this.value.replace("刪除","添加"), bS1 = false) :    //添加第一項, unshift()方法    (aTmp.unshift("January(1)"), this.value = this.value.replace("添加","刪除"), bS1 = true);    //輸出    aDiv[0].innerHTML = aTmp.join()  };  //刪除/添加最後一項  aInput[1].onclick = function ()  {    aTmp = getArray(aDiv[0].innerHTML);    bS2 ?    //刪除最後一項, pop()方法    (aTmp.pop(), this.value = this.value.replace("刪除","添加"), bS2 = false) :    //添加最後一項, push()方法    (aTmp.push("December(12)"), this.value = this.value.replace("添加","刪除"), bS2 = true);    //輸出    aDiv[0].innerHTML = aTmp.join()  };  //複製, concat()方法  aInput[2].onclick = function ()  {    aTmp = getArray(aDiv[1].innerHTML);    //輸出    aDiv[1].innerHTML = aTmp.concat(aTmp).toString().replace(/\s/g,"")  };  //還原, 利用數組的 length 特點  aInput[3].onclick = function ()  {    aTmp = getArray(aDiv[1].innerHTML);    //設定數組長度    aTmp.length = 10;    //輸出    aDiv[1].innerHTML = aTmp.join()  };  //第三組資料還原  aInput[4].onclick = function ()  {    aTmp = ["red","green","blue","white","yellow","black","brown"];    //輸出    aDiv[2].innerHTML = aTmp.join()  };  //刪除前三項  aInput[5].onclick = function ()  {    aTmp = getArray(aDiv[2].innerHTML);    //刪除, 0開始, 刪除3個    aTmp.splice(0, 3);      //輸出    aDiv[2].innerHTML = aTmp.join()  };  //刪除第二至三項  aInput[6].onclick = function ()  {    aTmp = getArray(aDiv[2].innerHTML);    //刪除, 2開始, 刪除2個    aTmp.splice(1, 2);      //輸出    aDiv[2].innerHTML = aTmp.join()  };  //在第二頂後插入"orange", "purple"  aInput[7].onclick = function ()  {    aTmp = getArray(aDiv[2].innerHTML);    //插入, 2開始, 插入"orange", "purple"    aTmp.splice(1, 0, "orange", "purple");      //輸出    aDiv[2].innerHTML = aTmp.join()  };  //替換第二項和第三項  aInput[8].onclick = function ()  {    aTmp = getArray(aDiv[2].innerHTML);    //插入, 2開始替換    aTmp.splice(1, 2, "#009900", "#0000ff");      //輸出    aDiv[2].innerHTML = aTmp.join()  };  //將div中的內容轉為數組  //str  div對象  function getArray(str)  {    aTmp.length = 0;    str = str.split(",");    for (var i in str)aTmp.push(str[i]);    return aTmp  }}</script></head><body><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><input type="button" value="刪除January(1)" /><input type="button" value="刪除December(12)" /><div>0,1,2,3,4,5,6,7,8,9</div><input type="button" value="複製" /><input type="button" value="還原" /><div>red,green,blue,white,yellow,black,brown</div><input type="button" value="還原" /><input type="button" value="刪除前三項" /><input type="button" value="刪除第二至三項" /><input type="button" value="在第二項後插入(orange, purple)" /><input type="button" value="替換第二項和第三項" /></body></html>

希望本文所述對大家的javascript程式設計有所協助。