Javascript 使用 jQuery 构造带参数的 URL
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Constructing a URL with parameters using jQuery
提问by Alfredo Osorio
I have for example the following URL stored in a global variable:
例如,我将以下 URL 存储在全局变量中:
var myUrl = "http://mydomain.com/something?row=1";
Then a function has to add let's say another parameter called "column". How would that function add parameters to a pre-existing URL string using jQuery?
然后一个函数必须添加让我们说另一个名为“ column”的参数。该函数如何使用 jQuery 将参数添加到预先存在的 URL 字符串中?
Example of the expected generated string:
预期生成的字符串示例:
"http://mydomain.com/something?row=1&column=9"
The problem is that myUrl
could also be just:
问题是这myUrl
也可能只是:
var myUrl = "http://mydomain.com/something";
(Notice that there are not pre-existing parameters)
(注意没有预先存在的参数)
采纳答案by Jesse Pollak
Check out the jQuery function .param(), that should do the trick.
查看 jQuery 函数 .param(),它应该可以解决问题。
http://api.jquery.com/jQuery.param/
http://api.jquery.com/jQuery.param/
You can then just create a function which appends the string generated by .param() to a url.
然后,您可以创建一个函数,将 .param() 生成的字符串附加到 url。
回答by epascarello
var myUrl = "http://mydomain.com/something";
function addQSParm(name, value) {
var re = new RegExp("([?&]" + name + "=)[^&]+", "");
function add(sep) {
myUrl += sep + name + "=" + encodeURIComponent(value);
}
function change() {
myUrl = myUrl.replace(re, "" + encodeURIComponent(value));
}
if (myUrl.indexOf("?") === -1) {
add("?");
} else {
if (re.test(myUrl)) {
change();
} else {
add("&");
}
}
}
console.log(myUrl);
addQSParm("foo", "asdf");
console.log(myUrl);
addQSParm("bar", "qwerty");
console.log(myUrl);
addQSParm("foo", "123");
console.log(myUrl);
回答by Andrew Hare
You don't need jQuery, use a function like this:
你不需要 jQuery,使用这样的函数:
var buildUrl = function(base, key, value) {
var sep = (base.indexOf('?') > -1) ? '&' : '?';
return base + sep + key + '=' + value;
}
You would use it like this:
你会像这样使用它:
buildUrl('http://www.example.com/foo', 'test', '123');
buildUrl('http://www.example.com/foo?bar=baz', 'test', '123');
回答by Esailija
Keep everything in an object until you actually need a string.
将所有内容保存在一个对象中,直到您真正需要一个字符串为止。
First populate the object from some initial values:
首先从一些初始值填充对象:
var $_GET = location.search.substr(1).split("&").reduce( function( obj, val ){
if( !val ) return obj;
var pair = val.split("=");
obj[pair[0]] = pair[1];
return obj;
}, {} );
Considering initial url of: "http://mydomain.com/something?row=1&column=9"
考虑初始网址: "http://mydomain.com/something?row=1&column=9"
$_GET['column'] = 5;
$.param( $_GET ); //"row=1&column=5"
回答by ShankarSangoli
You can try this.
你可以试试这个。
myUrl += ((myUrl.indexOf('?') == -1) ? '?' : '&');
myUrl += "column=9";
回答by Omar Stewey
if (myUrl.indexOf("?") != -1){
// contains query string
}
else
{
// doesn't
}