使用 Prototype JavaScript 从当前 URL 获取 URL 参数
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get URL Parameters from current URL using Prototype JavaScript
提问by Sal Prima
I'm noob to JavaScript and want to use Prototype JSFramework to get some URL parameters. Imagine I have the following URL on my current browser:
我是 JavaScript 的菜鸟，想使用Prototype JS框架来获取一些 URL 参数。想象一下，我在当前浏览器上有以下 URL：
http://www.somewhere.com?param=abc
how can I get the value of 'param'using any function or utility of Prototype JS?
如何获得'param'使用Prototype JS 的任何功能或实用程序的价值？
回答by Scott
Prototype.js DOES provide a utility:
Prototype.js 确实提供了一个实用程序：
uri.toQueryParams();
回答by agamemnerd
Expanding on Scott's answer: to put the value of the URL variable 'param' into the javascript variable 'x' you would use Prototype like so:
扩展 Scott 的答案：要将 URL 变量 'param' 的值放入 javascript 变量 'x' 中，您可以像这样使用 Prototype：
x = document.URL.toQueryParams().param;
回答by Jacob Relkin
You really don't need Prototype for this:
你真的不需要原型：
function get_param(param) {
var search = window.location.search.substring(1);
var compareKeyValuePair = function(pair) {
var key_value = pair.split('=');
var decodedKey = decodeURIComponent(key_value[0]);
var decodedValue = decodeURIComponent(key_value[1]);
if(decodedKey == param) return decodedValue;
return null;
};
var comparisonResult = null;
if(search.indexOf('&') > -1) {
var params = search.split('&');
for(var i = 0; i < params.length; i++) {
comparisonResult = compareKeyValuePair(params[i]);
if(comparisonResult !== null) {
break;
}
}
} else {
comparisonResult = compareKeyValuePair(search);
}
return comparisonResult;
}
var param_value = get_param('param'); //abc
