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【JS前端小技巧】JavaScript,把URL里的IP地址替换成指定IP地址


js把一个url里的ip替换成指定ip

需求:
javascript把一个url里的ip地址换成指定ip

function IntelliURLReplaceIP(url) {
var url = url||"";
var ip = "10.67.83.48";

try {
if (url == "") {
return url;
}

if(url.indexOf(ip) != -1)
{
//console.log("the same ip.");
return url;//没有此字段则退出
}

//截取ip前字段"http:"
if(url.indexOf('//') == -1)
{
return url;//没有此字段则退出
}
var substr1 = url.substring(0,url.indexOf('//'));
//console.log("oldurl protocol:",substr1);//"http:"

//截取ip后字段"it/local/facerec/default/20200609112555435018.jpg""
if(url.indexOf('/it/') == -1)
{
return url;//没有此字段则退出
}
var substr2 = url.substring(url.indexOf('/it/')+1,url.length);
//console.log("oldurl path:", substr2);//"it/local/facerec/default/20200609112555435018.jpg"

var newurl = substr1+"//"+ ip + "/" + substr2;
//console.log("newurl:",newurl);

return newurl;

} catch(exception){
//alert("error");
}
}
console.log(IntelliURLReplaceIP("http://10.67.82.93/it/local/facerec/default/20200609112555435018.jpg"));


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