web前端|js教程
javascript,URL
web前端-js教程
今天遇到一个需要用javascript将url中的某些参数替换的需求，想起了不久前从网上淘到了一个parseUrl函数，正好可以借此实现，代码整理如下：
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//分析url
function parseURL(url) {
var a = document.createElement(a);
a.href = url;
return {
source: url,
protocol: a.protocol.replace(:, \),
host: a.hostname,
port: a.port,
query: a.search,
params: (function () {
var ret = {},
seg = a.search.replace(/^\?/, \).split(&),
len = seg.length, i = 0, s;
for (; i < len; i++) {
if (!seg[i]) { continue; }
s = seg[i].split(=);
ret[s[0]] = s[1];
}
return ret;
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})(),
file: (a.pathname.match(/\/([^\/?#]+)$/i) || [, \])[1],
hash: a.hash.replace(#, \),
path: a.pathname.replace(/^([^\/])/, /$1),
relative: (a.href.match(/tps?:\/\/[^\/]+(.+)/) || [, \])[1],
segments: a.pathname.replace(/^\//, \).split(/)
};
}
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//替换myUrl中的同名参数值
function replaceUrlParams(myUrl, newParams) {
/*
for (var x in myUrl.params) {
for (var y in newParams) {
if (x.toLowerCase() == y.toLowerCase()) {
myUrl.params[x] = newParams[y];
}
}
}
*/
for (var x in newParams) {
var hasInMyUrlParams = false;
for (var y in myUrl.params) {
if (x.toLowerCase() == y.toLowerCase()) {
myUrl.params[y] = newParams[x];
hasInMyUrlParams = true;
break;
}
}
//原来没有的参数则追加
if (!hasInMyUrlParams) {
myUrl.params[x] = newParams[x];
}
}
var _result = myUrl.protocol + "://" + myUrl.host + ":" + myUrl.port + myUrl.path + "?";
for (var p in myUrl.params) {
_result += (p + "=" + myUrl.params[p] + "&");
}
if (_result.substr(_result.length - 1) == "&") {
_result = _result.substr(0, _result.length - 1);
}
if (myUrl.hash != "") {
_result += "#" + myUrl.hash;
}
return _result;
}
//辅助输出
function w(str) {
document.write(str + "
");
}
var myURL = parseURL(:8080/dir/index.html?id=255&m=hello#top);
w("myUrl.file = " + myURL.file)// = index.html
w("myUrl.hash = " + myURL.hash)// = op
w("myUrl.host = " + myURL.host)// = \
w("myUrl.query = " + myURL.query) // = ?id=255&m=hello
w("myUrl.params = " + myURL.params) // = Object = { id: 255, m: hello }
w("myUrl.path = " + myURL.path)// = /dir/index.html
w("myUrl.segments = " + myURL.segments) // = Array = [dir, index.html]
w("myUrl.port = " + myURL.port)// = 8080
w("myUrl.protocol = " + myURL.protocol) // = http
w("myUrl.source = " + myURL.source) // = :8080/dir/index.html?id=255&m=hello#top
var _newUrl = replaceUrlParams(myURL, { id: 101, m: "World", page: 1,"page":2 });
w("
新url为：")
w(_newUrl); //:8080/dir/index.html?id=101&m=World&page=2#top
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