似乎无法弄清楚为什么我一直收到此ReferenceError: OnLoad is not defined错误。
从我上次提交的时间开始，我已经更改了第28-30行，这就是全部。
这怎么会导致我的javascript无法正确加载？我只更改了这三行。我确定这些行不应该真正相关。 Javascript文件与上一次提交中的文件相同。 我错过了什么？
UserInterface.php - 当前提交
class UserInterface {
var $ParentAppInstance;
function __construct($AppInstance){
$this->ParentAppInstance = $AppInstance;
$this->DrawPageHTML();
$this->DrawDBSetDropdown();
$this->DrawQueryForm();
}
//Override thjis function to change the HTML and PHP of the UI page.
protected function DrawPageHTML(){
$CurrDB_Obj = $this->ParentAppInstance->CurrentDBObj; //Line 28
$EncodedFields = json_encode($CurrDB_Obj->GetFields()); //Line 29
echo "<body onload='OnLoad($EncodedFields);'>"; // Line 30
echo '
<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
<link rel="stylesheet" type="text/css" href="./CSS/UserInterface.css">
<div id="DebugOutput"></div>
</body>
';
}
protected function DrawDBSetDropdown(){
echo '<div align="right">';
echo '<select onchange="SwitchDatabaseSet();" name="DBSetList" form="DBSetSelector" id="DBSetSelector">';
$i = 0;
foreach ($this->ParentAppInstance->DBSetsArr as $DBSet){
if ($DBSet->DBSetName == $this->ParentAppInstance->CurrDBSetStr){
echo '<option value="' . $DBSet->DBSetName . '">' . $DBSet->DBSetName . '</option>';
}
}
foreach ($this->ParentAppInstance->DBSetsArr as $DBSet){
if ($DBSet->DBSetName == $this->ParentAppInstance->CurrDBSetStr){/* DO NOTHING. IE. IGNORE IT*/}
else if ($DBSet->DBSetName == 'DBSet0'){/* DO NOTHING. IE. IGNORE IT*/}
else{
//Add the DBSet to the dropdown list.
$i++;
echo '<option value="' . $DBSet->DBSetName . '">' . $DBSet->DBSetName . '</option>';
}
}
echo '</select>';
echo '</div>';
}
protected function DrawQueryForm(){
echo '<form action="DatabaseSearch.php" method="post" accept-charset="UTF-8">';
echo '<div id="QFormBody">';
$NumActiveQBoxes = $this->ParentAppInstance->Config['ApplicationSettings']['NumberDefaultQueryOptions'];
for ($i = 1; $i <= $NumActiveQBoxes; $i++){
echo '<div class="QueryBox" name="QBox_' . $i . '">';
echo '<select name=Field_' . $i . '">';
$DBSet_Num = filter_var($this->ParentAppInstance->CurrDBSetStr, FILTER_SANITIZE_NUMBER_INT);
$CurrDBSet_Obj = $this->ParentAppInstance->DBSetsArr[$DBSet_Num];
foreach($CurrDBSet_Obj->GetDBSetFields() as $Field){
//echo $Field;
echo '<option>' . $Field . '</option>';
}
echo '</select>';
echo '<input type="text" name="Query_' . $i . '"></input>';
echo '<button class= "RMButton" type="button">-</button>';
echo '</div>';
}
echo '<button type="button" id="add" onclick="AddQueryBox();">+</button>';
echo '<button type="submit" id="submit">SEARCH</button>';
echo '</Form>';
echo '<script src=/GLS_DBSearchProject/JavaScript/UserInterface.js></script>';
}
UserInterface.php - 上次提交
class UserInterface {
var $ParentAppInstance;
function __construct($AppInstance){
$this->ParentAppInstance = $AppInstance;
$this->DrawPageHTML();
$this->DrawDBSetDropdown();
$this->DrawQueryForm();
}
//Override thjis function to change the HTML and PHP of the UI page.
protected function DrawPageHTML(){
$DBSet_Num = filter_var($this->ParentAppInstance->CurrDBSetStr, FILTER_SANITIZE_NUMBER_INT); //Line 28
$CurrDBSet_Obj = $this->ParentAppInstance->DBSetsArr[$DBSet_Num]; //Line 29
$EncodedFields = json_encode($CurrDBSet_Obj->GetDBSetFields()); //Line 30
echo "<body onload='OnLoad($EncodedFields);'>";
echo '
<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
<link rel="stylesheet" type="text/css" href="./CSS/UserInterface.css">
<div id="DebugOutput"></div>
</body>
';
}
protected function DrawDBSetDropdown(){
echo '<div align="right">';
echo '<select onchange="SwitchDatabaseSet();" name="DBSetList" form="DBSetSelector" id="DBSetSelector">';
$i = 0;
foreach ($this->ParentAppInstance->DBSetsArr as $DBSet){
if ($DBSet->DBSetName == $this->ParentAppInstance->CurrDBSetStr){
echo '<option value="' . $DBSet->DBSetName . '">' . $DBSet->DBSetName . '</option>';
}
}
foreach ($this->ParentAppInstance->DBSetsArr as $DBSet){
if ($DBSet->DBSetName == $this->ParentAppInstance->CurrDBSetStr){/* DO NOTHING. IE. IGNORE IT*/}
else if ($DBSet->DBSetName == 'DBSet0'){/* DO NOTHING. IE. IGNORE IT*/}
else{
//Add the DBSet to the dropdown list.
$i++;
echo '<option value="' . $DBSet->DBSetName . '">' . $DBSet->DBSetName . '</option>';
}
}
echo '</select>';
echo '</div>';
}
protected function DrawQueryForm(){
echo '<form action="DatabaseSearch.php" method="post" accept-charset="UTF-8">';
echo '<div id="QFormBody">';
$NumActiveQBoxes = $this->ParentAppInstance->Config['ApplicationSettings']['NumberDefaultQueryOptions'];
for ($i = 1; $i <= $NumActiveQBoxes; $i++){
echo '<div class="QueryBox" name="QBox_' . $i . '">';
echo '<select name=Field_' . $i . '">';
$DBSet_Num = filter_var($this->ParentAppInstance->CurrDBSetStr, FILTER_SANITIZE_NUMBER_INT);
$CurrDBSet_Obj = $this->ParentAppInstance->DBSetsArr[$DBSet_Num];
foreach($CurrDBSet_Obj->GetDBSetFields() as $Field){
//echo $Field;
echo '<option>' . $Field . '</option>';
}
echo '</select>';
echo '<input type="text" name="Query_' . $i . '"></input>';
echo '<button class= "RMButton" type="button">-</button>';
echo '</div>';
}
echo '<button type="button" id="add" onclick="AddQueryBox();">+</button>';
echo '<button type="submit" id="submit">SEARCH</button>';
echo '</Form>';
echo '<script src=/GLS_DBSearchProject/JavaScript/UserInterface.js></script>';
}
UserInterface.js
var DBSetFields = [];
var NumQBoxes = 3;
//window.onload = OnLoad();
function OnLoad(Fields){
console.log("OnLoad called");
CloneDBSetFields(Fields);
var RMNodeList = document.getElementsByClassName('RMButton');
for (var i = 0; i < RMNodeList.length; ++i) {
console.log(RMNodeList[i]);
RMNodeList[i].onclick = RemoveQBox; // Calling myNodeList.item(i) isn't necessary in JavaScript
}
}
function JSTEST(){
window.alert("JS Called Successfully!!");
}
function CloneDBSetFields(Fields){
console.log("CloneDBSetFields");
DBSetFields = Fields;
}
function SwitchDatabaseSet(MainPageDoc){
document.getElementById("DebugOutput").innerHTML = "Test";
window.location.replace('/GLS_DBSearchProject/index.php?DBSet=' + document.getElementById("DBSetSelector").value);
console.log(document.getElementById("DBSetSelector").value);
//console.log(document.)
}
function Fields_FOREACH(ELEMENT, INDEX, ARRAY){
console.log("TEST");
var FieldOption = document.createElement('option');
FieldOption.setAttribute('value', ARRAY[INDEX]);
FieldOption.innerHTML = ARRAY[INDEX];
this.appendChild(FieldOption);
}
function AddQueryBox(){
NumQBoxes += 1;
var NewQBox = document.createElement('div');
NewQBox.setAttribute('class', 'QueryBox');
//Create and fill Field Selector dropdown "select" element
var FieldSelector = document.createElement('select');
FieldSelector.setAttribute('name', 'Field_' + NumQBoxes);
//foreach element in Fields
console.log(DBSetFields);
DBSetFields.forEach(Fields_FOREACH, FieldSelector);
//Create and fill
var QueryText = document.createElement('input');
QueryText.setAttribute('type', 'text');
QueryText.setAttribute('name', 'Query_' + NumQBoxes);
//Create "-" Remove button for removing query lines.
var RemoveButton = document.createElement('button');
RemoveButton.innerHTML = "-";
RemoveButton.setAttribute('type', 'button');
RemoveButton.setAttribute('class', 'RMButton');
RemoveButton.addEventListener("click", RemoveQBox);
//Combine the individual elements into a new query box and insert the new query box into the HTML Document
NewQBox.appendChild(FieldSelector);
NewQBox.appendChild(QueryText);
NewQBox.appendChild(RemoveButton);
document.getElementById("QFormBody").insertBefore(NewQBox, document.getElementById("add"));
}
function RemoveQBox(e){
console.log("Remove");
var RemoveButton = this; //this == e.currentTarget
console.log(RemoveButton);
var QBox = RemoveButton.parentNode;
QBox.remove();
NumQBoxes -= 1;
}