Javascript中的HTML元素替换
下面讨论的代码应该替换的每个实例都很复杂,但基本上它将在页面上获取一个IP,并将其转换为服务器名称(由我在代码中定义)。它的工作原理是它替换了一些IP,但每个IP只有一个,所以如果一个页面上有多个实例,它只替换一个。我该怎么办Javascript中的HTML元素替换,javascript,Javascript,下面讨论的代码应该替换的每个实例都很复杂,但基本上它将在页面上获取一个IP,并将其转换为服务器名称(由我在代码中定义)。它的工作原理是它替换了一些IP,但每个IP只有一个,所以如果一个页面上有多个实例,它只替换一个。我该怎么办 var arrServerInstances = document.body.innerHTML.match('27015'); if (arrServerInstances != null) { if (arrServerInstanc
var arrServerInstances = document.body.innerHTML.match('27015');
if (arrServerInstances != null)
{
if (arrServerInstances.length > 0)
{
//UK Servers
document.body.innerHTML = document.body.innerHTML.replace('83.222.246.178:27015','Common Grounds D2 UK');
document.body.innerHTML = document.body.innerHTML.replace('83.222.246.174:27015','Assault 24/7 UK');
document.body.innerHTML = document.body.innerHTML.replace('83.222.246.176:27015','Officefest UK');
document.body.innerHTML = document.body.innerHTML.replace('83.222.246.175:27015','Dustfest UK');
document.body.innerHTML = document.body.innerHTML.replace('83.222.246.177:27015','London Gungame UK');
document.body.innerHTML = document.body.innerHTML.replace('83.222.246.179:27015','Dust 2 Deatchmatch UK');
document.body.innerHTML = document.body.innerHTML.replace('83.222.240.93:27015','Mad Hatter\'s TF2 Tea Party UK');
//US Servers
document.body.innerHTML = document.body.innerHTML.replace('76.74.236.164:27015','Dust/Office Deathmatch US');
document.body.innerHTML = document.body.innerHTML.replace('76.74.236.169:27015','Zombiemod US');
document.body.innerHTML = document.body.innerHTML.replace('76.74.236.165:27015','Dust 24/7 -aMs- US');
document.body.innerHTML = document.body.innerHTML.replace('76.74.236.172:27015','CS 1.6 Gungame US');
document.body.innerHTML = document.body.innerHTML.replace('76.74.239.31:27015','Crackhouse US');
document.body.innerHTML = document.body.innerHTML.replace('76.74.236.166:27015','Iceworld 24/7 US');
document.body.innerHTML = document.body.innerHTML.replace('76.74.236.170:27015','Mad as a TF2 Hatter US');
document.body.innerHTML = document.body.innerHTML.replace('76.74.236.167:27015','Gungame Turbo US');
document.body.innerHTML = document.body.innerHTML.replace('76.74.236.168:27015','CS:S Iceworld 24/7 US');
}
}
<> P.S.S.这是我在JavaScript中写的第一件事,我是C、C++、Objic C、VBA(上帝禁止)程序员,所以如果有一个更简单的方法来做这件事,请不要害怕指出它。 < p>你已经编译了一个与“27015”匹配的字符串的列表,现在你需要循环一遍,并与你的列表进行比较。 尝试“foreach”循环(在Javascript中有点困难)。
或者尝试“while”循环。您可以在比较(并可能更改)列表时将每个元素从列表中弹出,然后在列表中没有剩余元素时退出循环
在这里,我将使用jQuery来帮助您,因为它有一个方便的功能,并且使DOM的编辑更加容易。您使用正则表达式进行替换,以便可以为全局替换指定
g
标志:
s = s.replace(/83\.222\.246\.178:27015/g,'Common Grounds D2 UK');
您不应该获取正文的HTML代码,然后在每次替换时将其放回原处。这意味着对于每次替换,您都要为主体中的每个对象创建一个字符串表示,然后再次将其解析回元素中
您可以使用indexOf
方法在另一个字符串中查找第一个出现的字符串,而不是使用正则表达式将每个出现的字符串都放入数组中
// get HTML
var html = document.body.innerHTML;
var hasServerInstances = html.indexOf('27015') != -1;
if (hasServerInstances) {
//UK Servers
html = html
.replace(/83\.222\.246\.178:27015/g,'Common Grounds D2 UK')
.replace(/83\.222\.246\.174:27015/g,'Assault 24/7 UK')
.replace(/83\.222\.246\.176:27015/g,'Officefest UK')
.replace(/83\.222\.246\.175:27015/g,'Dustfest UK')
.replace(/83\.222\.246\.177:27015/g,'London Gungame UK')
.replace(/83\.222\.246\.179:27015/g,'Dust 2 Deatchmatch UK')
.replace(/83\.222\.240\.93:27015/g,'Mad Hatter\'s TF2 Tea Party UK');
//US Servers
html = html
.replace(/76\.74\.236\.164:27015/g,'Dust/Office Deathmatch US')
.replace(/76\.74\.236\.169:27015/g,'Zombiemod US')
.replace(/76\.74\.236\.165:27015/g,'Dust 24/7 -aMs- US')
.replace(/76\.74\.236\.172:27015/g,'CS 1.6 Gungame US')
.replace(/76\.74\.239\.31:27015/g,'Crackhouse US')
.replace(/76\.74\.236\.166:27015/g,'Iceworld 24/7 US')
.replace(/76\.74\.236\.170:27015/g,'Mad as a TF2 Hatter US')
.replace(/76\.74\.236\.167:27015/g,'Gungame Turbo US')
.replace(/76\.74\.236\.168:27015/g,'CS:S Iceworld 24/7 US');
// put the HTML back
document.body.innerHTML = html;
}
您甚至可以使用正则表达式在一次替换中匹配多个服务器:
// get HTML
var html = document.body.innerHTML;
var hasServerInstances = html.indexOf('27015') != -1;
if (hasServerInstances) {
//UK Servers
html = html.replace(/83\.222\.246\.17[4-9]:27015/g, function(m){
switch(m) {
case '174': return 'Assault 24/7 UK';
case '175': return 'Dustfest UK';
case '176': return 'Officefest UK';
case '177': return 'London Gungame UK';
case '178': return 'Common Grounds D2 UK';
case '179': return 'Dust 2 Deatchmatch UK';
}
});
html = html.replace(/83\.222\.240\.93:27015/g,'Mad Hatter\'s TF2 Tea Party UK');
//US Servers
html = html.replace(/76\.74\.236\.1(6[4-9]|7[02]):27015/g, function(m){
switch(m) {
case '164': return 'Dust/Office Deathmatch US';
case '165': return 'Dust 24/7 -aMs- US';
case '166': return 'Iceworld 24/7 US';
case '167': return 'Gungame Turbo US';
case '168': return 'CS:S Iceworld 24/7 US';
case '169': return 'Zombiemod US';
case '170': return 'Mad as a TF2 Hatter US';
case '172': return 'CS 1.6 Gungame US';
}
});
html = html.replace(/76\.74\.239\.31:27015/g,'Crackhouse US');
// put the HTML back
document.body.innerHTML = html;
}
您可以执行以下操作:
var ips = {
'83.222.246.178:27015':'Common Grounds D2 UK',
'83.222.246.178:27015':'Common Grounds D2 UK',
'83.222.246.178:27015':'Common Grounds D2 UK'
// The rest of the ip adress go here
};
var text = document.body.innerHTML;
for(var i in ips)text=text.replace(RegExp(i,'g'),ips[i]);
document.body.innerHTML = text;
我会将数据从代码中分离出来,并从数据结构中处理数据 此新版本具有以下优点:
function attachIpNames() {
var str = document.body.innerHTML;
var arrServerInstances = str.match('27015');
if (arrServerInstances && arrServerInstances.length > 0) {
var definitions = [
//UK Servers
'83.222.246.178', 'Common Grounds D2 UK',
'83.222.246.174', 'Assault 24/7 UK',
'83.222.246.176', 'Officefest UK',
'83.222.246.175', 'Dustfest UK',
'83.222.246.177', 'London Gungame UK',
'83.222.246.179', 'Dust 2 Deatchmatch UK',
'83.222.240.93', 'Mad Hatter\'s TF2 Tea Party UK',
//US Servers
'76.74.236.164', 'Dust/Office Deathmatch US',
'76.74.236.169', 'Zombiemod US',
'76.74.236.165', 'Dust 24/7 -aMs- US',
'76.74.236.172', 'CS 1.6 Gungame US',
'76.74.239.31', 'Crackhouse US',
'76.74.236.166', 'Iceworld 24/7 US',
'76.74.236.170', 'Mad as a TF2 Hatter US',
'76.74.236.167', 'Gungame Turbo US',
'76.74.236.168', 'CS:S Iceworld 24/7 US'
];
var target;
for (var i = 0; i < definitions.length; i+= 2) {
target = definitions[i].replace(".", "\\.") + ":27015"; // get target and escape the period so it will match an actual period in the regex
str = str.replace(new RegExp(target, "g"), definitions[i+1]);
}
document.body.innerHTML = str;
}
}
函数attachIpNames(){
var str=document.body.innerHTML;
var arrServerInstances=str.match('27015');
if(arrServerInstances&&arrServerInstances.length>0){
变量定义=[
//英国服务器
“83.222.246.178”、“公共场所D2英国”,
‘83.222.246.174’、‘全天候突击英国’,
‘83.222.246.176’、‘Officefest UK’,
‘83.222.246.175’、‘英国垃圾节’,
“83.222.246.177”,“英国伦敦枪战”,
‘83.222.246.179’、‘Dust 2 Deatchmatch UK’,
“83.222.240.93”,“疯帽匠的TF2茶党英国”,
//美国服务器
‘76.74.236.164’、‘灰尘/办公室死亡竞赛美国’,
‘76.74.236.169’、‘僵尸美国’,
‘76.74.236.165’、‘灰尘24/7-aMs-US’,
‘76.74.236.172’、‘CS 1.6枪战美国’,
‘76.74.239.31’、‘Crackhouse US’,
‘76.74.236.166’、‘冰上世界24/7美国’,
‘76.74.236.170’、‘疯狂如TF2帽匠美国’,
‘76.74.236.167’、‘Gunggame Turbo US’,
‘76.74.236.168’、‘CS:S冰上世界24/7美国’
];
var目标;
对于(变量i=0;i
如果这是我的代码,我会尝试将替换范围缩小到只针对div,这样我就不会在整个文档中造成回流,而且速度可能也会更快。FYI:通常尝试避免
document.body.innerHTML=document.body.innerHTML.someModification…
。每次这样做时,浏览器都需要完全重新创建DOM。在您的例子中,DOM被重新创建了16次。有一些破坏性较小的解决方案。