python调用html内的js方法

这方面资料不多，不懂html，不懂js，略懂python的我，稍微看了点html和js，好几天的摸索，终于测试成功了。

PYQT+HTML利用PYQT的webview调用JS内方法

1.python调用js需要使用webView.page().mainFrame().evaluateJavaScript()这个方法

2.这个方法需要制作信号和槽才能触发。

功能：python调用html内的js定位函数。实现在webview内显示定位

测试代码mainUI.py

# -*- coding: utf-8 -*-
# 作者：神秘藏宝室
from Ui_mainUI import Ui_Dialog

#添加
from PyQt4.QtCore import *
from PyQt4.QtGui import *

class MyBrowser(QDialog, Ui_Dialog):
    """
    Class documentation goes here.
    """
    def __init__(self, parent=None):
        """
        Constructor

        @param parent reference to the parent widget
        @type QWidget
        """
        QDialog.__init__(self, parent)
        self.setupUi(self)
        htmlfile = "gpsPoint.html"
        url = QUrl(htmlfile)
        self.webView.load(url)
        self.webView.loadFinished.connect(self._plot)

        print u"html载入"
        # self.createConnection()

    # def createConnection(self):
    #     # self.connect(self.pushButtonGo,SIGNAL("clicked"),self.on_pushButtonGo_clicked)
    #     self.pushButtonGo.clicked.connect(self.on_pushButtonGo_clicked)

    @pyqtSlot(result="QString")
    def _plot(self):
        self.webView.page().mainFrame().evaluateJavaScript('theNewLocation(112.424483,34.640631);')

    @pyqtSignature("")
    def on_lineEditAddress_returnPressed(self):
        """
        Slot documentation goes here.
        """
        self.search()

    @pyqtSignature("")
    def on_pushButtonGo_clicked(self):
        """
        Slot documentation goes here.
        """
        self.search()

    def search(self):
        address = str(self.lineEditAddress.text())
        if address:
            if address.find('://') == -1:
                address = 'http://' + address
                self.lineEditAddress.setText(address)
            url = QUrl(address)
            self.webView.load(url)

if __name__ == "__main__":
    import sys
    app = QApplication(sys.argv)
    mb = MyBrowser()
    mb.show()
    sys.exit(app.exec_())

gpsPoint.html文件

        <html>
        <head>
            <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
            <meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
            <style type="text/css">
                body, html{width: 100%;height: 100%;margin:0;font-family:"微软雅黑";}
                #allmap{height:100%;width:100%;}
                #r-result{width:100%; font-size:14px;}
            </style>
            <script type="text/javascript" src="http://api.map.baidu.com/api?v=2.0&ak=mbGq5Dh8rUKhnzP6VbB0g1izAsyUjGab"></script>
            <title>经纬度定位</title>
        </head>
        <body>
            <div id="allmap"></div>
            <!--<div id="r-result">-->
                <!--经度: <input id="longitude" type="text" style="width:100px; margin-right:10px;" />-->
                <!--纬度: <input id="latitude" type="text" style="width:100px; margin-right:10px;" />-->
                <!--<input type="button" value="查询" onclick="theLocation()" />-->
            <!--</div>-->
        </body>
        </html>
        <script type="text/javascript">
            // 百度地图API功能
            var map = new BMap.Map("allmap");
            map.centerAndZoom(new BMap.Point(112.424483,34.640631), 15);//洛浦公园坐标
            map.enableScrollWheelZoom(true);

            //新建定位标准
            <!--theNewLocation(112.424483,34.640631);-->

            // 用经纬度设置地图中心点
            function theNewLocation(x,y){
                alert('测试');
                if(1){
                    map.clearOverlays();
                    var new_point = new BMap.Point(x,y);
                    var marker = new BMap.Marker(new_point);  // 创建标注
                    map.addOverlay(marker);              // 将标注添加到地图中
                    map.panTo(new_point);

                    //增加定位信息标注
                    map.centerAndZoom(new_point, 15);
                    var opts = {
                      width : 50,     // 信息窗口宽度
                      height: 50,     // 信息窗口高度
                      title : "我的最新位置" , // 信息窗口标题
                      enableMessage:true,//设置允许信息窗发送短息
                      message:"我就在这里哦~~~~"
                    }
                    var infoWindow = new BMap.InfoWindow("我确实就在这里！！！", opts);  // 创建信息窗口对象
                    marker.addEventListener("click", function(){
                        map.openInfoWindow(infoWindow,new_point); //开启信息窗口
                    });
                }
            }

        </script>