我正在尝试用PHP调用一个脚本函数。脚本函数如下：<script type="text/javascript">function printDiv(divName){ var printContents = document.getElementById(divName).innerHTML; var originalContents = document.body.innerHTML; document.body.innerHTML = printContents; window.print(); document.body.innerHTML = originalContents;}</script>我用这段代码来运行PHP函数：if (array_key_exists('ykpost', $_POST)) { // do something with php $printyk = '<script type="text/javascript">printDiv("PrintableArea");</script>'; echo $printyk;}打印内容如下：<div id="printableArea" class="printDiv"> //some content with created by php</div>我用这个表格发帖：<form id="ykbarcodepost" method="post"> <input type="submit" class="btn" value="Print Barcode" name="ykpost" /></form>但它不会打开打印窗口。如果我将变量更改为“你好”，它会写你好。所以认为爪哇脚本有问题。但是当我尝试使用另一个按钮时，如下所示$printyk<input type="button" class="btn" onclick="printDiv('printableArea')" value="Print Barcode" />它显示打印数字。有什么我看不见的吗？
1 回答
呼啦一阵风
TA贡献1802条经验 获得超6个赞
根据您提供的内容，您的 HTML 中存在错误，在以下代码中：
...
// do something with php
$printyk = '<script type="text/javascript">printDiv("PrintableArea")
...
PrintableArea应该是，printableArea
这里要提到的一件事是，在混合 if 语句和 HTML 以提高可读性时，始终使用替代 if 语法。
这是我在本地计算机上重现的工作PHP代码：
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
<title>PRINCE Is Not a Cheat-sheet for Emacs</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta name="generator" content="Prince Backend" />
<meta name="date" content="2020-01-25T19:09:08" />
<meta name="description" content="A mind map for the Emacs commands." />
<link rel="stylesheet" type="text/css" href="style.css" />
</head>
<body>
<div id="printableArea" class="printDiv">
//some content with created by php
<div>ASDAD</div>
</div>
<form id="ykbarcodepost" method="post">
<input type="submit" class="btn" value="Print Barcode" name="ykpost" />
</form>
<script type="text/javascript">
function printDiv(divName)
{
var printContents = document.getElementById(`${divName}`).innerHTML;
var originalContents = document.body.innerHTML;
document.body.innerHTML = printContents;
window.print();
document.body.innerHTML = originalContents;
}
<?php if (array_key_exists('ykpost', $_POST)) : ?>
// do something with php
printDiv("printableArea");
<?php endif ?>
</script>
</body>
</html>
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