From 17072f0d4eab4adfc188477fc5ef1e6845051476 Mon Sep 17 00:00:00 2001
From: storyicon <475783185@qq.com>
Date: Sun, 29 Jul 2018 17:23:23 +0800
Subject: [PATCH 1/2] add page.Wait() method

---
 page.go | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/page.go b/page.go
index 76b8120..c8346f2 100644
--- a/page.go
+++ b/page.go
@@ -249,6 +249,26 @@ func (p *Page) HTML() (string, error) {
 	return html, nil
 }
 
+//Wait method will cause the browser to spend up to timeout seconds
+//waiting for the element described by the selector to appear.
+//Method for testing or crawling Javascript-modified web pages (eg Ajax)
+// Simple example:
+//    page.Wait(`//*[@id="ajax-loaded"]`)
+//    fmt.Println(page.HTML())
+func (p *Page) Wait(selector string, timeout int64) *Selection {
+    start := time.Now().Unix()
+    for {
+        if time.Now().Unix()-start > timeout {
+            return nil
+        }
+        node := p.FindByXPath(selector)
+        if num, err := node.Count(); err == nil && num > 0 {
+            return node
+        }
+        time.Sleep(100 * time.Millisecond)
+    }
+}
+
 // RunScript runs the JavaScript provided in the body. Any keys present in
 // the arguments map will be available as variables in the body.
 // Values provided in arguments are converted into javascript objects.

From 33033d299029b6ea53cea66d83ad5c14d5945f3e Mon Sep 17 00:00:00 2001
From: storyicon <475783185@qq.com>
Date: Sun, 29 Jul 2018 17:42:34 +0800
Subject: [PATCH 2/2] fix example

---
 page.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/page.go b/page.go
index c8346f2..e03175f 100644
--- a/page.go
+++ b/page.go
@@ -253,7 +253,7 @@ func (p *Page) HTML() (string, error) {
 //waiting for the element described by the selector to appear.
 //Method for testing or crawling Javascript-modified web pages (eg Ajax)
 // Simple example:
-//    page.Wait(`//*[@id="ajax-loaded"]`)
+//    page.Wait(`//*[@id="ajax-loaded"]`, 30)
 //    fmt.Println(page.HTML())
 func (p *Page) Wait(selector string, timeout int64) *Selection {
     start := time.Now().Unix()