Query params example.

app.py

@@ -1,7 +1,45 @@
 import gradio as gr
 
-def greet(name):
-    return "Hello " + name + "!!"
+def predict(text, url_params):
+    print(url_params)
+    return ["Hello " + text + "!!", url_params]
 
-iface = gr.Interface(fn=greet, inputs="text", outputs="text")
-iface.launch()
+
+get_window_url_params = """
+    function(text_input, url_params) {
+        console.log(text_input, url_params);
+        const params = new URLSearchParams(window.location.search);
+        url_params = Object.fromEntries(params);
+        return [text_input, url_params];
+        }
+    """
+set_window_url_params = """
+    function(text_input, url_params) {
+            const params = new URLSearchParams(window.location.search);
+            params.set("text_input", text_input)
+            url_params = Object.fromEntries(params);
+    	    const queryString = '?' + params.toString();
+            // this next line is only needed inside Spaces, so the child frame updates parent
+            window.parent.postMessage({ queryString: queryString }, "*")
+            return [text_input, url_params];
+        }
+    """
+with gr.Blocks() as block:
+    url_params = gr.JSON({}, visible=True, label="URL Params")
+    text_input = gr.Text(label="Input")
+    text_output = gr.Text(label="Output")
+
+    btn = gr.Button("Get Params")
+    btn.click(fn=predict, inputs=[text_input, url_params],
+              outputs=[text_output, url_params], _js=get_window_url_params)
+
+    btn2 = gr.Button("Set Params")
+    btn2.click(fn=predict, inputs=[text_input, url_params],
+              outputs=[text_output, url_params], _js=set_window_url_params)
+    block.load(
+        fn=predict,
+        inputs=[text_input, url_params],
+        outputs=[text_output, url_params],
+        _js=get_window_url_params
+    )   
+block.launch(debug=True)