Create 获取 url 中的指定参数的值.js

获取 url 中的指定参数的值.js

@@ -0,0 +1,53 @@
+// void 0 return undefined
+
+// 1 
+// str: 模式的匹配项；key: 第一个捕获组的匹配项；value: 第二个捕获组的匹配项。
+function getUrlParam(sUrl, sKey){
+    var result = {};
+    sUrl.replace(/\??(\w+)\s?=\s?(\w+)&?/g, function(str, key, value){
+        if(result[key] !== undefined | void 0){
+            result[key] = [].concat(result[key], value);
+        }else{
+            result[key] = value;
+        }
+    });
+    if(sKey === void 0){
+        return result;
+    }else{
+        return result[sKey] || '';
+    }
+}
+// 2
+function getUrlParam(sUrl, sKey) {
+  var url = sUrl.slice(sUrl.indexOf('?') + 1, sUrl.indexOf('#')).split('&')
+  var ret, obj = {};
+	for (var i in url) {
+		var arr = url[i].split('=') 
+    obj[arr[0]] === void 0 ? obj[arr[0]] = arr[1] : obj[arr[0]] = [].concat(obj[arr[0]], arr[1])
+  }
+  sKey === void 0 ? ret = obj : ret = obj[sKey]
+	console.log(ret)
+	return ret
+}
+getUrlParam('http://www.nowcoder.com?key=1&key=2&key=3&test=4#hehe', 'key')
+
+// 3 
+function getUrlParam(sUrl, sKey) {
+  var url = sUrl.slice(sUrl.indexOf('?') + 1, sUrl.indexOf('#')).split('&')
+  var ret, obj = {};
+	for (var i in url) {
+		var arr = url[i].split('=') 
+		if (obj[arr[0]] !== void 0) {
+			obj[arr[0]] = [].concat(obj[arr[0]], arr[1])
+        } else {
+            obj[arr[0]] = arr[1]
+        }
+    }
+    if (sKey === void 0) {
+        ret = obj
+    } else {
+        ret = obj[sKey] || ''
+    }
+	console.log(ret)
+	return ret
+}