我需要帮助了解如何在php文件中的onclick事件中使用javascript函数
[英]I need help understanding how to use a javascript function in an onclick event in a php file
问题描述
I created a javascript file, made a function, and then linked my html file with it in the head. 
我创建了一个javascript文件，创建了一个函数，然后将我的html文件链接到头部。 It worked. 有效。 When I copy and pasted the exact same thing into a php file, the function suddenly doesn't work. 当我将完全相同的东西复制并粘贴到php文件中时，该函数突然不起作用。 I need a way to make the function work in the php file. 我需要一种方法使该函数在php文件中工作。
This is the javascript function: 这是javascript函数：
function showField(){
if(document.getElementById("downtown").checked && document.getElementById("pricerange").value == "100"){
document.getElementById("newField").removeAttribute("hidden");
}
}
This is the php where i try to call the function: 这是我尝试调用函数的php：
<input type="button" name = "search" value="Search" id="search" onclick="showField();">
This is in my head where I linked the javascript file: 这是我在链接javascript文件的地方：
<script src = "a3q5.js"></script>
2 个解决方案
解决方案1
0 2019-04-15 21:36:13
Seeing that I don't know what the rest of your code is, I would just make sure you have the normal HTML stuff: 看到我不知道你的其余代码是什么，我只是确保你有正常的HTML东西：
<!DOCTYPE html>
<html>
<head>
<title></title>
</head>
<body>
<input type="button" name = "search" value="Search" id="search" onclick="showField();">
<script src = "a3q5.js"></script>
</body>
</html>
Hope this helps! 希望这可以帮助！
解决方案2
0 2019-04-15 22:14:44
The simple way would be here, Put this to your PHP. 简单的方法就在这里，把它放到PHP上。 It worked for me 它对我有用
<?php
// your code
echo '<script src = "a3q5.js"></script>';
// your code
?>
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