使用JavaScript将全局变量调用为两个函数 [英] Call a global variable into two functions using JavaScript
问题描述
我有一个全局变量:
var x = document.getElementById("Node").value;
该值由ID为节点"的文本框确定.
Where the value is determined by a text box with the ID of "Node".
如果根据输入到文本和下拉列表中的值创建预设注释,则我有两个功能不相同.如何将上述全局变量调用到这些函数中,并将其添加到创建的语句中.两种功能看起来相同:
I have two functions that don't same thing if creating preset notes based on values entered into text and drop downs. How do I call the above global variable into those functions and have it added to the created statement. Both functions look the same:
这对一个功能有效,但在有两个功能时无效.我所拥有的是几个文本框和下拉菜单.这些文本框之一是称为Node的全局值.节点填写完毕后,我希望能够将该值同时放入两个函数中.这是我两个人都有的.
This works for one function but not when there is two. What I have is several text boxes and drop downs. One of those text boxes is a global value called Node. When node is filled out, I want to be able to pull that value into both functions. Here is what I have for both.
//Declare Node as a Global Variable
var x = document.getElementById("Node").value;
//Populates the Summary box
function mySummary() {
var a = document.getElementById("Field1").value;
var b = document.getElementById("Field2").value;
var c = document.getElementById("Field3").value;
var d = document.getElementById("Field4").value;
document.getElementById("Summary").innerHTML = a + " - " + b + " - " + c + " - " + x + " -" + d;
}
//Populates the Notes box
function myNotes() {
var a = document.getElementById("Field5").value;
var b = document.getElementById("Field6").value;
var c = document.getElementById("Field7").value;
var d = document.getElementById("Field8").value;
var e = document.getElementById("Field9").value;
document.getElementById("Notes").innerHTML = x + " - " + a + " / " + b + " - " + c + "% Offline - " + d + " - " + e + " - " + f;
}
问题在于X的值没有同时输出到两个函数中.输出进入文本区域
The issue is that the value of X is not being pulled into both functions at the same time for the output. The output goes into a text area
如果我在每个函数中创建一个局部变量,并让用户在每个文本框中输入相同的信息两次,则效果很好,但我希望他们只输入一次信息并将其拉入每个文本区域
If I create a local variable in each function and make the user enter the same information twice per text box it works fine, but I want them to only enter the information once and have it pulled into each text area
推荐答案
尝试一下
(function() {
var x = document.getElementById("Node").value;
document.getElementById("Node").onchange = function() {
myNode()
};
document.getElementById("mySelect1").onchange = function() {
myNotes()
};
document.getElementById("mySelect2").onclick = function() {
summary()
};
function myNode() {
x = document.getElementById("Node").value;
}
function summary() {
var a = document.getElementById("mySelect1").value;
var b = document.getElementById("mySelect2").value;
document.getElementById("5").value = a + " - " + b + " - " + x;
}
function myNotes() {
var a = document.getElementById("mySelect1").value;
var b = document.getElementById("mySelect2").value;
document.getElementById("4").value = a + " + " + b + " + " + x;
}
}
)();
Notes : <input type="text" id="4" /><br> Summary : <input type="text" id="5" /><br>
<select id="Node">
<option value="w">w
<option value="x">x
<option value="y">y
<option value="z">z
</select>
<select id="mySelect2">
<option value="a">a
<option value="b">b
<option value="c">c
<option value="d">d
</select>
<select id="mySelect1">
<option value="1">1
<option value="2">2
<option value="3">3
<option value="4">4
</select>
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