php to javaScript

本文关键字：javaScript to php | 更新日期: 2023-09-27

请帮我找出这个php代码的javaScript/jQuery等价物。

<?php 
    $from   = 'USD';
    $to     = 'INR';
    $url = 'http://finance.yahoo.com/d/quotes.csv?e=.csv&f=sl1d1t1&s='. $from . $to .'=X';
    $handle = @fopen($url, 'r');
    if ($handle) {
        $result = fgets($handle, 4096);
        fclose($handle);
    }
    $allData = explode(',',$result); 
    $dollarValue = $allData[1];
    echo 'Value of $1 in Indian Rupees is Rs. '.$dollarValue;

试试这个。。。

您可以使用jquery-ajax将值传递到php页面，并从ajax成功中获得输出。

$.ajax({
    type: "POST",
    url: "ajax.php",
    data: {from:from,to:to}, 
    success:  function(data){
alert(data);
//you can get output form ajax.php, what you expected.
}
});

ajax.php

<?php 
    $from   = $_POST['from'];
    $to     = $_POST['to'];
    $url = 'http://finance.yahoo.com/d/quotes.csv?e=.csv&f=sl1d1t1&s='. $from . $to .'=X';
    $handle = @fopen($url, 'r');
    if ($handle) {
        $result = fgets($handle, 4096);
        fclose($handle);
    }
    $allData = explode(',',$result); 
    $dollarValue = $allData[1];
    echo 'Value of $1 in Indian Rupees is Rs. '.$dollarValue;

参考编号：http://api.jquery.com/jquery.ajax/

在这种情况下，fopen的等价物就像执行jQuery Ajax GET请求，但是由于finance.yahoo.com位于不同的域上，并且他们的服务器不允许跨域请求，因此GET请求会出错。为了解决这个问题，您需要将PHP脚本放在同一个域上，并对此进行请求。

在服务器上保存脚本

parse.php

<?php 

$response =array('result'=>'failed','message'=>'missing params');
if(isset($_GET['from']) && isset($_GET['to'])){
    $from   = $_GET['from'];
    $to     = $_GET['to'];
    $url = 'http://finance.yahoo.com/d/quotes.csv?e=.csv&f=sl1d1t1&s='. $from .'&X='. $to;
    $handle = @fopen($url, 'r');
    if ($handle) {
        $result = fgets($handle, 4096);
        fclose($handle);
    }
    $allData = explode(',',$result); 
    $dollarValue = $allData[1];
    $response['result']=$dollarValue;
    $response['message']="value sent";
}
echo json_encode($response);
?>

JavaScript方法

function getData(from,to){
if (window.XMLHttpRequest) { // Mozilla, Safari, ...
            xhr1 = new XMLHttpRequest();
        } else if (window.ActiveXObject) { // IE 8 and older
            xhr1 = new ActiveXObject("Microsoft.XMLHTTP");
        }
         //path to your script
        xhr1.open("GET", "http://localhost/practice/parse.php?from="+from+"&to="+to, true);
        xhr1.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
        xhr1.send();
        xhr1.onreadystatechange = display_data;
        function display_data() {
            if (xhr1.readyState == 4) {
            console.log(xhr1.responseText);
            //do what you want to do here
            }
}
}