Question

如标题所述，我有一个ajax电话。在成功函数上，我想将返回的数据存储到变量中，以便在我的javascript中使用。 randNum.php只是每2秒返回一个随机数，我想将这个数字用于我脚本中的其他函数。如何在我的javascript中使用从php文件发回的数据？我知道有更合理的方法可以解决这个问题，但想知道如何以这种方式完成任务。

    var result;
    var interval = 2000;
    function myCall() {
        var request = $.ajax({
            url: "randNum.php",
            type: "GET",            
            dataType: "html",
            success:function (msg) {
                result = msg;  //Not working as I intend
                setTimeout(myCall, interval);
            }
        });
    }

function(){
    do something with result;
}

Answer 1

在函数之外声明一个全局变量，并在ajax响应之后为其分配响应变量。

var results;
function TestJSONP(){
    $.ajax({
        url: "randNum.php",
        jsonp: "callback",
        dataType: "jsonp",

        success: function (response) {
            console.log(response);
            results = response;
        }
    });
}

Answer 2

您可能不需要指定import sys from PyQt4.QtGui import * from PyQt4.QtCore import * from PyQt4 import uic from PyQt4.QtGui import QImage import qimage2ndarray import matplotlib from matplotlib import colors as C from matplotlib import pyplot, cm from matplotlib.figure import Figure import dicom import numpy import ReadDicom as RD import Matrixhandler as MH form_class = uic.loadUiType('Dicom_GUI.ui')[0] class Mainwindow(QMainWindow, form_class): def __init__(self): super().__init__() self.setupUi(self) self.connect(self.CTREAD, SIGNAL("clicked()"), self.ct_clicked) self.connect(self.STRUCTREAD, SIGNAL("clicked()"), self.st_clicked) self.CTSlider.valueChanged.connect(self.valchange) def ct_clicked(self): self.dcmList = [] self.CTList = [] self.dcmList = RD.dcmRead() RD.dSave(self.dcmList) self.dcmList = RD.dcmReadAll() self.CTList = RD.readCTdcm(self.dcmList) dsCT1 = dicom.read_file(self.CTList[0]) self.x, self.y, self.z, self.dx, self.dy, self.dz, self.ConstPixelDims, self.ConstdoseDims, self.ConstdoseDimsalt, self.ConstPixelSpacing, self.ConstDoseSpacing = MH.GetCoordi(self.CTList) self.ArrayCT = numpy.zeros(self.ConstPixelDims, float) self.ArrayCT = MH.GetCTImg(self.CTList, self.ArrayCT) self.CTSlider.setMinimum(0) self.CTSlider.setMaximum(len(self.CTList)-1) def st_clicked(self): print('st clicked') def valchange(self): self.vals = self.CTSlider.value() self.Temparray = self.ArrayCT[:,:,self.vals] self.imgsh = qimage2ndarray.gray2qimage(self.Temparray) self.pixemap = QPixmap.fromImage(self.imgsh) if __name__ == "__main__": app = QApplication(sys.argv) myWindow = Mainwindow() myWindow.show() app.exec_()，但可以使用dataType来获取原始响应。像

这样的东西

jqXHR.responseText

当您设置function myCall() { var request = $.ajax({ url: "randNum.php", type: "GET", success:function (data, textStatus, jqXHR) { result = jqXHR.responseText; setTimeout(myCall, interval); } }); }并且响应不是该类型时，则ajax未成功，并且将调用dataType回调。

AJAX：将PHP数据存储在Javascript变量

2 个答案: