JavaScript函数用于将变量传递给URL。 [英] JavaScript Function Use To Pass Variables to a URL.

问题描述

我有这个JavaScript代码段。我使用的网络服务是GoogleAPI。

I have this JavaScript code snippet. The webservice I am using is a GoogleAPI.

<script type="text/javascript" >     

	var googleURL = 'https://www.googleapis.com/analytics/v3/data/ga?ids=ga%3A76546294&dimensions='+'ga%3Asource&metrics=ga%3Ausers&sort=-ga%3Ausers&start-date='+strStartDate+'&end-date='+strEndDate+'&max-results=10';
	
	//The following JS function will pass the values from the form to the URL.
	function passVariable() {
        
	  var strStartDate = document.getElementById("from_date").value;
	  var strEndDate = document.getElementById("to_date").value;
        
	  alert(googleURL);
        
	}		

由于评论提到函数passVariable（）{}用于传递strStartDate& strEndDate作为googleURLs的strStartDate& strEndDate。



我使用

As the comment mentions function passVariable() {} used to pass the strStartDate & strEndDate as the googleURLs' strStartDate & strEndDate.

I use the

alert(googleURL);

显示网址​​，输出结果为未定义 。我无法理解我该怎么做。有人可以帮我解决这个问题吗？



谢谢&问候，

Chiranthaka

to display the URL and the output was "undefined". I cannot understand what should I do. Could someone please help me to solve this matter?

Thanks & regards,
Chiranthaka

推荐答案

<script>
var strStartDate;
var strEndDate;

function SetVariable() {

   strStartDate = document.getElementById("from_date").value;
   strEndDate = document.getElementById("to_date").value;
}



SetVariable();



var googleURL = 'https://www.googleapis.com/analytics/v3/data/ga?ids=ga%3A76546294&dimensions='+'ga%3Asource&metrics=ga%3Ausers&sort=-ga%3Ausers&start-date='+strStartDate

+'&end-date='+strEndDate+'&max-results=10';

alert(  googleURL);



</script>

试试这个：

Try this:

<script>
function passVariable() {
        
   var strStartDate = document.getElementById("from_date").value;
   var strEndDate = document.getElementById("to_date").value;

   var googleURL = 'https://www.googleapis.com/analytics/v3/data/ga?ids=ga%3A76546294&dimensions='+'ga%3Asource&metrics=ga%3Ausers&sort=-ga%3Ausers&start-date='+strStartDate+'&end-date='+strEndDate+'&max-results=10';

   alert(googleURL);
}
</script>

阅读本文以了解 JavaScript中的范围 [ ^ ]。

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ +

你输入了错误的名字，应该是strStartDate而不是startDate，试试这个：

Read this to understand the Scope in JavaScript[^].
++++++++[Round 2]+++++++++
You have typed the wrrong names, should be strStartDate not startDate, Try this:

<script>
var strStartDate;
var strEndDate;
 
//This is the function that alert the GoogleURL.

function testVal(){

var googleURL = 'https://www.googleapis.com/analytics/v3/data/ga?ids=ga%3A76546294&dimensions='+'ga%3Asource&metrics=ga%3Ausers&sort=-ga%3Ausers&start-date='+strStartDate+'&end-date='+strEndDate+'&max-results=10';

alert(googleURL);
 
}
 
//The following JS function will pass the values from the form to the URL.
function passVariable() {

strStartDate = document.getElementById("from_date").value;
strEndDate = document.getElementById("to_date").value;
 
alert(strStartDate);
alert(strEndDate);
 
testVal();

}

</script>

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