Javascript 所有变量都具有全局范围，但函数仍然可以'；我不能接近他们
我已经在代码中对所有变量进行了全局设置，但我的函数仍然无法访问它们，我相信这也会导致代码中的函数像getValueOfEasy（）函数一样未定义（我的函数在定义时被称为“未定义”还有其他原因吗？） 我很感激任何帮助，我的主要问题是我不明白为什么我的变量不能被函数读取 我的代码链接如下： 代码：Javascript 所有变量都具有全局范围，但函数仍然可以'；我不能接近他们,javascript,function,global-variables,undefined,Javascript,Function,Global Variables,Undefined,我已经在代码中对所有变量进行了全局设置，但我的函数仍然无法访问它们，我相信这也会导致代码中的函数像getValueOfEasy（）函数一样未定义（我的函数在定义时被称为“未定义”还有其他原因吗？） 我很感激任何帮助，我的主要问题是我不明白为什么我的变量不能被函数读取 我的代码链接如下： 代码： 函数getValueOfEasy（）{ var easy=document.getElementById（“easy”）.value； } 函数getValueOfMedium（）{ var mediu
函数getValueOfEasy（）{
var easy=document.getElementById（“easy”）.value；
}
函数getValueOfMedium（）{
var medium=document.getElementById（“medium”）.value；
}
函数getValueOfHard（）{
var hard=document.getElementById（“硬”）.value；
}
var FirstE2；
var FirstM2；
var FirstH2；
var 2；
var-m2；
var第二个H2；
var ThirdE2；
var ThirdM2；
var-ThirdH2；
var FirstE；
var FirstM；
var FirstH；
var SecondE；
var SecondM；
var第二；
第三变种；
var-ThirdM；
var ThirdH；
函数timeE（）{
如果（容易<4）{
FirstE=“先完成你的#简单任务”；
第二，E2=3；
}else if（简单===3）{
SecondE=“第二次做你的#简单作业”；
第二，E2=3；
}else if（easy=3）{
FirstM=“先完成你的#中等作业”；
FirstM2=2；
}否则如果（中等===2）{
SecondM=“第二次完成你的#中等作业”
第二M2=2；
}否则如果（中等===1）{
ThirdM=“你的#中等作业最后完成吗”
ThirdM2=2；
}
}
函数timeH（）{
如果（硬>=1）{
FirstH=“先完成你的#艰巨任务”；
FirstH2=1；
}否则{
返回；
}
无功励磁；
无功励磁DM；
var-dh；
函数yesE（）{
激元=3；
}
函数mehE（）{
激元=2；
}
函数noE（）{
激元=1；
}
功能主义{
dM=3；
}
函数mehM（）{
激振dm=2；
}
函数名（）{
激励dm=1；
}
功能性紫杉{
dH=3；
}
函数mehH（）{
dH=2；
}
函数noH（）{
dH=1；
}
函数ExcitedE（）{
if（excide=3&&FirstE2=3）{
FirstE=“最后完成你的#简单作业”；
}else if（excide=3&&FirstE2=3&&easy>=4）{
ThirdE=“第三次完成你的#简单作业”；
}
//简单：列表第一&是的
否则，如果（Excide=2&&FirstE2=3）{
SecondE=“第二次做你的#简单作业”；
}
//简单：排名第一&可能很兴奋
else if（excide=1&&FirstE2=3）{
FirstE=“先完成你的#简单作业”；
}
//简单：排名第一&不兴奋
else if（Excide=3&&Second2=3）{
SecondE=“第二次做你的#简单作业”；
}
//简单：排名第二&是的
else if（Excide=2&&Second=3）{
SecondE=“第二次做你的#简单作业”；
}
//简单：排名第二，可能很兴奋
else if（excide=1&&SecondE2=3）{
FirstE=“先完成你的#简单作业”；
}
//简单：第二和第二
如果（励磁端=3&&ThirdE2=3）{
ThirdE=“第三次完成你的#简单作业”；
}
//简单：排名第三&是的
否则，如果（励磁端=3&&ThirdE2=3）{
SecondE=“第二次做你的#简单作业”；
}
//简单：第三张名单，可能很兴奋
否则，如果（励磁端=2&&ThirdE2=3）{
FirstE=“先完成你的#简单作业”；
}
//简单：第三和第三
否则，如果（励磁端=1&&ThirdE2=3）{
FirstE=“先完成你的#简单作业”；
}
}
函数{
如果（excidedm=3&&FirstM2=3&&medium>=2）{
ThirdM=“第三次完成你的#简单作业”；
}else if（excitem=3&&FirstE2=3）{
FirstM=“最后完成你的#简单作业”；
}
//中等：列表第一名，是
if（excidedm=3&&SecondM2=3）{
SecondM=“第二次做你的#简单作业”；
}
//中等：排名第二&是
否则如果（excidedm=2&&SecondM2=3）{
SecondM=“第二次做你的#简单作业”；
}
//中等：排名第二，可能很兴奋
否则如果（excidedm=1&&SecondM2=3）{
FirstM=“先完成你的#简单作业”；
}
//中等：第二和第二
如果（励磁DM=3&&ThirdM2=3）{
ThirdM=“第三次完成你的#简单作业”；
}
//中等：排名第三&是
否则，如果（excidedm=2&&ThirdM2=3）{
SecondM=“第二次做你的#简单作业”；
}
//中等：排名第三，可能很兴奋
否则，如果（excidedm=3&&ThirdM2=3）{
FirstM=“先完成你的#简单作业”；
}
//中等：第三和第三
}否则{
返回；
}
函数{
如果（Excite=3&&FirstH2=3&&hard==1）{
ThirdH=“最后完成你的#艰巨任务”；
}else if（Excide=3&&FirstH2=3）{
FirstH=“先完成你的#艰巨任务”；
}
//难：名单第一&是的
如果（励磁端=3&&SecondH2=3）{
SecondH=“第二次完成你的#艰巨任务”；
}
//难：排名第二&是的
else if（Excide=2&&SecondH2=3）{
SecondH=“第二次完成你的#艰巨任务”；
}
//难：排名第二，可能很兴奋
else if（Excide=1&&SecondH2=3）{
FirstH=“先完成你的#艰巨任务”；
}
//硬：第二和第二
<html>
<script>
function getValueOfEasy(){
var easy = document.getElementById("easy").value;
}
function getValueOfMedium(){
var medium = document.getElementById("medium").value;
}
function getValueOfHard(){
var hard = document.getElementById("hard").value;
}
<!--gives number to sentence -->
var FirstE2;
var FirstM2;
var FirstH2;
var SecondE2;
var SecondM2;
var SecondH2;
var ThirdE2;
var ThirdM2;
var ThirdH2;
<!-- prints __ var sentce to schedule -->
var FirstE;
var FirstM;
var FirstH;
var SecondE;
var SecondM;
var SecondH;
var ThirdE;
var ThirdM;
var ThirdH;
function timeE() {
if (easy < 4){
FirstE = "do your # easy assignemnts first";
SecondE2 = 3;
}else if (easy === 3) {
SecondE = "do your # easy assignments second";
SecondE2 = 3;
} else if (easy <= 2) {
ThirdE = "Do your # easy assignemnts last ";
ThirdE2 = 3;
}
}
function timeM() {
if (medium >= 3) {
FirstM = "do your # medium assignments first";
FirstM2 = 2;
} else if (medium === 2) {
SecondM = "do your # medium assignments second"
SecondM2 = 2;
} else if (medium === 1) {
ThirdM = "Do your # medium assignments last"
ThirdM2 = 2;
}
}
function timeH() {
if (hard >= 1) {
FirstH = "do your # hard assignments first";
FirstH2 = 1;
} else {
return;
}
var excitedE;
var excitedM;
var excitedH;
function yesE() {
excitedE = 3;
}
function mehE() {
excitedE = 2;
}
function noE() {
excitedE = 1;
}
function yesM {
excitedM = 3;
}
function mehM() {
excitedM = 2;
}
function noM() {
excitedM = 1;
}
function yesH {
excitedH = 3;
}
function mehH() {
excitedH = 2;
}
function noH() {
excitedH = 1;
}
function ExcitedE() {
if (excitedE = 3 && FirstE2 = 3) {
FirstE = "do your # easy assignments last";
} else if (excitedE = 3 && FirstE2 = 3 && easy >= 4) {
ThirdE = "do your # easy assignments third";
}
//easy: 1st of list & yes excited
else if (excitedE = 2 && FirstE2 = 3) {
SecondE = "do your # easy assignments Second";
}
//easy: 1st of list & maybe excited
else if (excitedE = 1 && FirstE2 = 3) {
FirstE = "do your # easy assignments first";
}
//easy: 1st of list & not excited
else if (excitedE = 3 && SecondE2 = 3) {
SecondE = "do your # easy assignments second";
}
//easy: 2nd of list & yes excited
else if (excitedE = 2 && SecondE2 = 3) {
SecondE = "do your # easy assignments second";
}
//easy: 2nd of list and maybe excited
else if (excitedE = 1 && SecondE2 = 3) {
FirstE = "do your # easy assignments first";
}
//easy: 2nd and no
if (excitedE = 3 && ThirdE2 = 3) {
ThirdE = "do your # easy assignments third";
}
//easy: 3rd of list & yes excited
else if (excitedE = 3 && ThirdE2 = 3) {
SecondE = "do your # easy assignments second";
}
//easy: 3nd of list and maybe excited
else if (excitedE = 2 && ThirdE2 = 3) {
FirstE = "do your # easy assignments first";
}
//easy: 3rd and no
else if (excitedE = 1 && ThirdE2 = 3) {
FirstE = "do your # easy assignments first";
}
}
function ExcitedM() {
if (excitedM = 3 && FirstM2 = 3 && medium >= 2) {
ThirdM = "do your # easy assignments third";
} else if (excitedM = 3 && FirstE2 = 3) {
FirstM = "do your # easy assignments last";
}
//medium: 1st of list & yes excited
if (excitedM = 3 && SecondM2 = 3) {
SecondM = "do your # easy assignments second";
}
//medium: 2nd of list & yes excited
else if (excitedM = 2 && SecondM2 = 3) {
SecondM = "do your # easy assignments second";
}
//medium: 2nd of list and maybe excited
else if (excitedM = 1 && SecondM2 = 3) {
FirstM = "do your # easy assignments first";
}
//medium: 2nd and no
if (excitedM = 3 && ThirdM2 = 3) {
ThirdM = "do your # easy assignments third";
}
//medium: 3rd of list & yes excited
else if (excitedM = 2 && ThirdM2 = 3) {
SecondM = "do your # easy assignments second";
}
//medium: 3nd of list and maybe excited
else if (excitedM = 3 && ThirdM2 = 3) {
FirstM = "do your # easy assignments first";
}
//medium: 3rd and no
} else {
return;
}
function ExcitedH() {
if (excitedE = 3 && FirstH2 = 3 && hard === 1) {
ThirdH = "do your # hard assignments last";
} else if (excitedE = 3 && FirstH2 = 3) {
FirstH = "do your # hard assignments first";
}
//hard: 1st of list & yes excited
if (excitedE = 3 && SecondH2 = 3) {
SecondH = "do your # hard assignments second";
}
//hard: 2nd of list & yes excited
else if (excitedE = 2 && SecondH2 = 3) {
SecondH = "do your # hard assignments second";
}
//hard: 2nd of list and maybe excited
else if (excitedE = 1 && SecondH2 = 3) {
FirstH = "do your # hard assignments first";
}
//hard: 2nd and no
if (excitedE = 3 && ThirdH2 = 3) {
ThirdH = "do your # hard assignments third";
}
//hard: 3rd of list & yes excited
else if (excitedE = 2 && ThirdH2 = 3) {
SecondH = "do your # hard assignments second";
}
//hard: 3nd of list and maybe excited
else if (excitedE = 3 && ThirdH2 = 3) {
FirstH = "do your # hard assignments first";
}
//hard: 3rd and no
} else {
return;
}
function showSchedule() {
document.getElementById("HD1").style.display = "none";
document.getElementById("homeworkSchedule").style.display = "block";
}
function showEnterBtn() {
document.getElementById("save").style.display = "none";
document.getElementById("enter").style.display = "block";
}
function showHard() {
document.getElementById("MD1").style.display = "none";
document.getElementById("HD1").style.display = "block";
}
function showMedium() {
document.getElementById("ED1").style.display = "none";
document.getElementById("MD1").style.display = "block";
}
<
!--makes schedule-- >
function makeHomeworkSchedule() {
document.getElementById("first").innerHTML = FirstE + " " + FirstM + " " + FirstH;
document.getElementById("second").innerHTML = SecondE + " " + SecondM + " " + SecondH;
document.getElementById("third").innerHTML = ThirdE + " " + ThirdM + " "
ThirdH;
}
</script>
<body>
<div id=ED1>
<p>
<center>
Question 1, enter number?
</center>
</p>
<center><input min="0" id="easy" type="number"/></center>
<center>
<p>This an other question, click one of the buttons?</p>
<button class="button button3" onclick="yesE()">Yes</button>
<button class="button button3" onclick="mehE()">Meh</button>
<button class="button button3" onclick="noE()">No</button>
</center>
<h1> </h1>
<center><button class="button button3" onclick="getValueOfEasy(); timeE(); ExcitedE(); showMedium(); " id="easyEnter">Enter</button></center>
</div>
<div id="MD1" style="display:none">
<h1>
Question 2?
</h1>
<input min="0" id="medium" type="text">
<p>this is another question?</p>
<button class="button button3" onclick="yesM()">Yes</button>
<button class="button button3" onclick="mehM()">Meh</button>
<button class="button button3" onclick="noM()">No</button>
<h1> </h1>
<button class="button button3" onclick="getValueOfMedium(); showHard(); timeM(); ExcitedM();" id="mediumEnter">Enter</button>
</div>
<div id="HD1" style="display:none">
<p>
Question 3?
</p>
<input min="0" id="hard" type="text">
<p>WOah another question!?</p>
<button class="button button3" onclick="yesH()">Yes</button>
<button class="button button3" onclick="mehH()">Meh</button>
<button class="button button3" onclick="noH()">No</button>
<h1> </h1>
<button id="save" class="button button3" onclick="getValueOfHard(); timeH(); ExcitedH(); makeHomeworkSchedule();">Save</button>
</div>
<div id="homeworkSchedule" style="display:none">
<p>... paragprah ...</p>
<h1>1st:</h1>
<h5 id="first"></h5>
<h1>2nd:</h1>
<h5 id="second"></h5>
<h1>3rd:</h1>
<h5 id="third"></h5>
</div>
</body>
</html>
// declare your variable in global
var firstVariable;
function A(firstVariable){
// do something
}
// call function
A(firstVariable)
// if u want to check is some variable equals some value use `===` instead of '='
// don't use `<!--- -->` in JS, use `//` or `/* -your comment- */`