diff --git a/lib/browser/param.js b/lib/browser/param.js
new file mode 100644
index 0000000..80e678a
--- /dev/null
+++ b/lib/browser/param.js
@@ -0,0 +1,30 @@
+
+function cleanArray(actual) {
+    const newArray = []
+    for (let i = 0; i < actual.length; i++) {
+        if (actual[i]) {
+            newArray.push(actual[i])
+        }
+    }
+    return newArray
+}
+
+/**
+ * get请求对象转换地址栏参数
+ * @author 王勇 <https://github.com/wangyong1997>
+ * @category browser
+ * @alias yd_browser_param
+ * @param {Object} json对象
+ * @returns {String} 处理后结果
+ * @example  yd_browser_param({name:'张三', age:18}) -> name=%E5%BC%A0%E4%B8%89&age=18
+ */
+export default (json) => {
+    if (!json) return ''
+    return cleanArray(
+        Object.keys(json).map(key => {
+            if (json[key] === undefined) return ''
+            return encodeURIComponent(key) + '=' + encodeURIComponent(json[key])
+        })
+    ).join('&')
+}
+  
\ No newline at end of file
diff --git a/lib/browser/paramToObj.js b/lib/browser/paramToObj.js
new file mode 100644
index 0000000..cc8bf02
--- /dev/null
+++ b/lib/browser/paramToObj.js
@@ -0,0 +1,28 @@
+
+
+/**
+ * 地址栏参数转换为对象形式
+ * @author 王勇 <https://github.com/wangyong1997>
+ * @category browser
+ * @alias yd_browser_paramToObj
+ * @param {String} 字符串url地址后参数
+ * @returns {Object} 返回json 对象
+ * @example  yd_browser_paramToObj('?name=%E5%BC%A0%E4%B8%89&age=18') -> {name:'张三', age:18}
+ */
+export default (url) => {
+    const search = decodeURIComponent(url.split('?')[1]).replace(/\+/g, ' ')
+    if (!search) {
+        return {}
+    }
+    const obj = {}
+    const searchArr = search.split('&')
+    searchArr.forEach(v => {
+        const index = v.indexOf('=')
+        if (index !== -1) {
+            const name = v.substring(0, index)
+            const val = v.substring(index + 1, v.length)
+            obj[name] = val
+        }
+    })
+    return obj
+}
\ No newline at end of file
diff --git a/lib/object/objectMerge.js b/lib/object/objectMerge.js
new file mode 100644
index 0000000..cb449e0
--- /dev/null
+++ b/lib/object/objectMerge.js
@@ -0,0 +1,34 @@
+
+/**
+ * 合并两个对象，给最后一个优先级高
+ * @author 王勇 <https://github.com/wangyong1997>
+ * @category object
+ * @alias yd_object_objectMerge
+ * @param {Object} target
+ * @param {(Object|Array)} source
+ * @returns {Object}
+ * @example
+    yd_object_objectMerge({aa:{cc:123, bb:456}, cc:123}, {aa: {cc: 'abc'}, cc: 123}) '
+        => '{"aa":{"cc":"abc","bb":456},"cc":123}'
+        
+    yd_object_objectMerge({obj:{cc:123, bb:[1,2,3,4]}, age:12}, {obj: {bb: ['a', 'b']}, cc: 123})
+        => '{"obj":{"cc":123,"bb":["a","b"]},"age":12,"cc":123}'
+ */
+export default function objectMerge(target, source) {
+    if (typeof target !== 'object') {
+        target = {}
+    }
+    if (Array.isArray(source)) {
+        return source.slice()
+    }
+    Object.keys(source).forEach(property => {
+        const sourceProperty = source[property]
+        if (typeof sourceProperty === 'object') {
+            target[property] = objectMerge(target[property], sourceProperty)
+        } else {
+            target[property] = sourceProperty
+        }
+    })
+    return target
+}
+  
\ No newline at end of file
diff --git a/lib/string/byteLength.js b/lib/string/byteLength.js
new file mode 100644
index 0000000..b14c5d4
--- /dev/null
+++ b/lib/string/byteLength.js
@@ -0,0 +1,19 @@
+/**
+ * 获取字符串的utf8字节长度
+ * @author 王勇 <https://github.com/wangyong1997>
+ * @category string
+ * @alias yd_string_byteLength
+ * @param {String} str 字符串数据
+ * @returns {String} 返回utf8字符串的字节长度
+ * @example  yd_string_byteLength('123abc张三') -> 12
+ */
+export default (str) => {
+    let s = str.length
+    for (var i = str.length - 1; i >= 0; i--) {
+        const code = str.charCodeAt(i)
+        if (code > 0x7f && code <= 0x7ff) s++
+        else if (code > 0x7ff && code <= 0xffff) s += 2
+        if (code >= 0xDC00 && code <= 0xDFFF) i--
+    }
+    return s
+}
\ No newline at end of file