Js点击添加一行，点击即时删除一行代码

2024-09-05 12:18:14

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JavaScript点击添加即可添加一行，点击删除即可删除一行，Ajax无刷新添加、删除数据的小例子。这是比较常用的网页小特效，我们在平时经常会遇到的，代码看上去并不复杂，因此对于学习JavaScript的人来说，是个不错的参考例子。

<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Js点击自动添加行-www.codefans.net</title><meta http-equiv="Content-Type" content="text/html; charset=gb2312" /><script type="text/javascript">var count = 0;function Add(){count += 1;var File1 = document.getElementById("file1");var div = document.createElement("div");var countTxtgui_ze= document.createTextNode("规则"+count+"：");var countTxtxie_yi = document.createTextNode(" "+"协议"+" ");var select1 = document.createElement("<select name=protocol_value></select>");        var ooption1 = new Array();        ooption1[0] = "tcp";        ooption1[1] = "udp";        ooption1[2] = "ip";        ooption1[3] = "ether";        for(var i=0;i<4;i++){select1.options[i] = new Option(ooption1[i], ooption1[i]);}var countTxtshu_ju_bao_fang_xiang = document.createTextNode(" "+"数据包方向"+" ");var select2 = document.createElement("<select name=direction_value></select>");        var ooption2 = new Array();        ooption2[0] = "src";        ooption2[1] = "dst";        ooption2[2] = "src_or_dst";        ooption2[3] = "src_and_dst";        for(var i=0;i<4;i++){select2.options[i] = new Option(ooption2[i], ooption2[i]);}var countTxtxing_shi = document.createTextNode(" "+"形式"+" ");var select3 = document.createElement("<select name=type_value></select>");        var ooption3 = new Array();        ooption3[0] = "ip";        ooption3[1] = "port";        for(var i=0;i<2;i++){select3.options[i] = new Option(ooption3[i], ooption3[i]);}var inputTxtaa = document.createElement("input");inputTxtaa.type = "text";inputTxtaa.name = "ip_or_port_value";var countTxtkong_ge1=document.createTextNode(" ");var select4 = document.createElement("<select name=conjunction_value></select>");        var ooption4 = new Array();        ooption4[0] = "0";        ooption4[1] = "or";        ooption4[2] = "and";        ooption4[3] = "not";        for(var i=0;i<4;i++){select4.options[i] = new Option(ooption4[i], ooption4[i]);}var countTxtkong_ge2=document.createTextNode(" ");var btn = document.createElement("input");btn.type = "button";btn.name= "delete"btn.value = "删除";btn.onclick = function(){this.parentNode.parentNode.removeChild(this.parentNode);var n = File1.getElementsByTagName("div");for(var k=0; k<n.length; k++){n[k].firstChild.nodeValue = "规则"+(k+1)+"：";}count -= 1;}div.appendChild(countTxtgui_ze);div.appendChild(countTxtxie_yi);div.appendChild(select1);div.appendChild(countTxtshu_ju_bao_fang_xiang);div.appendChild(select2);div.appendChild(countTxtxing_shi);div.appendChild(select3);div.appendChild(inputTxtaa);div.appendChild(countTxtkong_ge1);div.appendChild(select4);div.appendChild(countTxtkong_ge2);div.appendChild(btn);File1.appendChild(div);}</script></head><body onload="Add()"><form id="zhua_bao" name="zhua_bao" method="post" action="create_sniffer_config.jsp"><div id="file1"> </div><br/><input name="add" id="1" value="AddLine" type="button" onclick="Add()"/><input name="submit" type="submit" value="提交"/><input name="reset" type=reset value="清空"/></form></body></html>

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