JavaScript代码中未捕获的SyntaxError

Question

我有一个语法错误，上面写着“Uncaught SyntaxError：Unexpected token ILLEGAL”，我认为它位于JavaScript代码的<?php ?>代码中，但无法弄清楚原因...如果删除代码在<?php ?>标记中，我没有收到任何错误。我之前删除了错误，但随后错误突然“再次”上升。

所以这是JavaScript函数。我正在调用PHP代码，因为如果出现问题我需要显示错误，并且正在从PHP文件中调用javascript函数。我在这个PHP文件中需要PHP文件。

function visErrorFraaLastOppSjekk() {
    document.getElementById("errorLastOpp").innerHTML = "Filnamnet " + "<strong>" + "<?php echo substr($_FILES['file']['name'],0,50) ?>" + "</strong>" + "eksisterer allereide.<br>" + "Gje bilete eit anna namn, eller<br>" + "velg eit anna bilete og prøv igjen.";
}

  // Denne funksjonen er for last_opp_sjekk.php som tar med denne sida, index_geolocation, og setter inn tekst i error boks for last opp vindauget
function visErrorFraaLastOppOK() {
    document.getElementById("errorLastOpp").innerHTML = "Bilete er blitt opplasta.";
    document.getElementById("filNamnTabellR").value = "Opplasta_bilete/" + "<?php echo $_FILES['file']['name'] ?>"; // EDIT: FIXED
    document.getElementById("namnLastOpp").value = "<?php echo $_FILES['file']['name'] ?>";
    document.getElementById("storrelse_kb").value = "<?php echo round($_FILES['file']['size']/1024000, 3) ?>" + " megabyte " + "(<?php echo round($_FILES['file']['size']/1024, 3) ?>" + " kilobyte)";
}

以下是错误代码的图片：

更新

以下是Google Developer Tools中的一些代码：

<script>
    // Denne funksjonen er for last_opp_sjekk.php som tar med denne sida, index_geolocation, og setter inn tekst i error boks for last opp vindauget
function visErrorFraaLastOppSjekk() {
    document.getElementById("errorLastOpp").innerHTML = "Filnamnet " + "<strong>" + "<br />

//错误代码在上面一行     未捕获的SyntaxError：意外的标记ILLEGAL

    （！）注意：未定义索引：位于 103 上的C：\ wamp \ www \ geolocation_for_voss_gymnas \ index_geolocation_admin.php中的文件     调用堆栈     #TimeMemoryFunctionLocation     10.0029204912 {main}（）.. \ index_geolocation_admin.php ： 0          “+”
“+”eksisterer allereide。“+”Gje bilete eit anna namn，eller
“+”velg eit anna bileteogprøvigjen。“;     }

  // Denne funksjonen er for last_opp_sjekk.php som tar med denne sida, index_geolocation, og setter inn tekst i error boks for last opp vindauget
function visErrorFraaLastOppOK() {
    document.getElementById("errorLastOpp").innerHTML = "Bilete er blitt opplasta.";
    document.getElementById("filNamnTabellR").value = "Opplasta_bilete/" + "<br />
<font size='1'><table class='xdebug-error xe-notice' dir='ltr' border='1' cellspacing='0' cellpadding='1'>
<tr><th align='left' bgcolor='#f57900' colspan="5"><span style='background-color: #cc0000; color: #fce94f; font-size: x-large;'>( ! )</span> Notice: Undefined index: file in C:\wamp\www\geolocation_for_voss_gymnas\index_geolocation_admin.php on line <i>109</i></th></tr>
<tr><th align='left' bgcolor='#e9b96e' colspan='5'>Call Stack</th></tr>
<tr><th align='center' bgcolor='#eeeeec'>#</th><th align='left' bgcolor='#eeeeec'>Time</th><th align='left' bgcolor='#eeeeec'>Memory</th><th align='left' bgcolor='#eeeeec'>Function</th><th align='left' bgcolor='#eeeeec'>Location</th></tr>
<tr><td bgcolor='#eeeeec' align='center'>1</td><td bgcolor='#eeeeec' align='center'>0.0029</td><td bgcolor='#eeeeec' align='right'>204912</td><td bgcolor='#eeeeec'>{main}(  )</td><td title='C:\wamp\www\geolocation_for_voss_gymnas\index_geolocation_admin.php' bgcolor='#eeeeec'>..\index_geolocation_admin.php<b>:</b>0</td></tr>
</table></font>
";
    document.getElementById("namnLastOpp").value = "<br />
<font size='1'><table class='xdebug-error xe-notice' dir='ltr' border='1' cellspacing='0' cellpadding='1'>
<tr><th align='left' bgcolor='#f57900' colspan="5"><span style='background-color: #cc0000; color: #fce94f; font-size: x-large;'>( ! )</span> Notice: Undefined index: file in C:\wamp\www\geolocation_for_voss_gymnas\index_geolocation_admin.php on line <i>110</i></th></tr>
<tr><th align='left' bgcolor='#e9b96e' colspan='5'>Call Stack</th></tr>
<tr><th align='center' bgcolor='#eeeeec'>#</th><th align='left' bgcolor='#eeeeec'>Time</th><th align='left' bgcolor='#eeeeec'>Memory</th><th align='left' bgcolor='#eeeeec'>Function</th><th align='left' bgcolor='#eeeeec'>Location</th></tr>
<tr><td bgcolor='#eeeeec' align='center'>1</td><td bgcolor='#eeeeec' align='center'>0.0029</td><td bgcolor='#eeeeec' align='right'>204912</td><td bgcolor='#eeeeec'>{main}(  )</td><td title='C:\wamp\www\geolocation_for_voss_gymnas\index_geolocation_admin.php' bgcolor='#eeeeec'>..\index_geolocation_admin.php<b>:</b>0</td></tr>
</table></font>
";
    document.getElementById("storrelse_kb").value = "<br />
<font size='1'><table class='xdebug-error xe-notice' dir='ltr' border='1' cellspacing='0' cellpadding='1'>
<tr><th align='left' bgcolor='#f57900' colspan="5"><span style='background-color: #cc0000; color: #fce94f; font-size: x-large;'>( ! )</span> Notice: Undefined index: file in C:\wamp\www\geolocation_for_voss_gymnas\index_geolocation_admin.php on line <i>111</i></th></tr>
<tr><th align='left' bgcolor='#e9b96e' colspan='5'>Call Stack</th></tr>
<tr><th align='center' bgcolor='#eeeeec'>#</th><th align='left' bgcolor='#eeeeec'>Time</th><th align='left' bgcolor='#eeeeec'>Memory</th><th align='left' bgcolor='#eeeeec'>Function</th><th align='left' bgcolor='#eeeeec'>Location</th></tr>
<tr><td bgcolor='#eeeeec' align='center'>1</td><td bgcolor='#eeeeec' align='center'>0.0029</td><td bgcolor='#eeeeec' align='right'>204912</td><td bgcolor='#eeeeec'>{main}(  )</td><td title='C:\wamp\www\geolocation_for_voss_gymnas\index_geolocation_admin.php' bgcolor='#eeeeec'>..\index_geolocation_admin.php<b>:</b>0</td></tr>
</table></font>
0" + " megabyte " + "(<br />
<font size='1'><table class='xdebug-error xe-notice' dir='ltr' border='1' cellspacing='0' cellpadding='1'>
<tr><th align='left' bgcolor='#f57900' colspan="5"><span style='background-color: #cc0000; color: #fce94f; font-size: x-large;'>( ! )</span> Notice: Undefined index: file in C:\wamp\www\geolocation_for_voss_gymnas\index_geolocation_admin.php on line <i>111</i></th></tr>
<tr><th align='left' bgcolor='#e9b96e' colspan='5'>Call Stack</th></tr>
<tr><th align='center' bgcolor='#eeeeec'>#</th><th align='left' bgcolor='#eeeeec'>Time</th><th align='left' bgcolor='#eeeeec'>Memory</th><th align='left' bgcolor='#eeeeec'>Function</th><th align='left' bgcolor='#eeeeec'>Location</th></tr>
<tr><td bgcolor='#eeeeec' align='center'>1</td><td bgcolor='#eeeeec' align='center'>0.0029</td><td bgcolor='#eeeeec' align='right'>204912</td><td bgcolor='#eeeeec'>{main}(  )</td><td title='C:\wamp\www\geolocation_for_voss_gymnas\index_geolocation_admin.php' bgcolor='#eeeeec'>..\index_geolocation_admin.php<b>:</b>0</td></tr>
</table></font>
0" + " kilobyte)";
}

  // Denne funksjonen er for last_opp_sjekk.php som tar med denne sida, index_geolocation, og setter inn tekst i error boks for last opp vindauget
function visErrorLastOppSjekkIV() {
    document.getElementById("errorLastOpp").innerHTML = "Fila er ikkje valid. Prøv igjen;<br>" + "sjekk filtypa og filstørrelsen.";
}
</script>

Answer 1

我在下一行中看到了问题：

document.getElementById("filNamnTabellR").value = "Opplasta_bilete/" + <?php echo $_FILES['file']['name'] ?>;

<?php echo $_FILES['file']['name'] ?>附近缺少引号或应该是：

document.getElementById("filNamnTabellR").value = "Opplasta_bilete/<?php echo $_FILES['file']['name'] ?>";

请注意，要从服务器端打印数据，最好使用json_encode()功能。

---

更新：您仍然遇到问题，因为PHP中未定义$_FILES['file']['name']。服务器端生成一个警告，该警告以多行打印，而JavaScript不支持这种类型的多行字符串文字。您必须在打印前检查$_FILES数组元素是否存在。

Answer 2

这一行是罪魁祸首

document.getElementById("filNamnTabellR").value = "Opplasta_bilete/" + <?php echo $_FILES['file']['name'] ?>;

将其替换为

document.getElementById("filNamnTabellR").value = "Opplasta_bilete/" + "<?php echo $_FILES['file']['name'] ?>";

Answer 3

更改此

"Opplasta_bilete/" + <?php echo $_FILES['file']['name'] ?>;

到

"Opplasta_bilete/" + "<?php echo $_FILES['file']['name'] ?>";

Answer 4

所有这些新行。您尝试将巨大的数量的文本填充到JavaScript字符串中，而不先对其进行清理。