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POIs there a limitation for document.getElementById("").value?
 

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  1. POIs there a limitation for document.getElementById("").value?
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    <p>I have written a code to read the value from many id's and display the value out when the button is pressed. However, the value cannot been display when it is press. I save the file as php but i need to use javascript for display the value of variable when button is press.Below is part of my code that causes it not working</p> <pre><code>&lt;html&gt; &lt;head&gt; &lt;title&gt;...&lt;/title&gt; CSS code here &lt;/head&gt; &lt;body&gt; $senario_1=3; $senario_2=3; $senario_3=3; $senario_4=3; &lt;div id="content"&gt; &lt;p class="senario_1"&gt;Senario 1&lt;/p&gt; &lt;p class="senario_2"&gt;Senario 2&lt;/p&gt; &lt;p class="senario_3"&gt;Senario 3&lt;/p&gt; &lt;p class="senario_4"&gt;Senario 4&lt;/p&gt; &lt;input id="senario_1" class="senario_1" type="text" value="&lt;?php echo $senario_1 ?&gt;"/&gt; &lt;input id="senario_2" class="senario_2" type="text" value="&lt;?php echo $senario_2 ?&gt;"/&gt; &lt;input id="senario_3" class="senario_3" type="text" value="&lt;?php echo $senario_3 ?&gt;"/&gt; &lt;input id="senario_4" class="senario_4" type="text" value="&lt;?php echo $senario_4 ?&gt;"/&gt; &lt;script type='text/javascript'&gt; setTimeout(function() { window.location.reload(true); },60000); &lt;/script&gt; &lt;/div&gt; &lt;div id="menu"&gt; &lt;button onclick="refresh()" name="refresh" class="refresh"&gt;Refresh&lt;/button&gt; &lt;button onclick="senario_1()" name="senario_1" class="senario_1"&gt;Senario 1&lt;/button&gt; &lt;button onclick="senario_2()" name="senario_2" class="senario_2"&gt;Senario 2&lt;/button&gt; &lt;button onclick="senario_3()" name="senario_3" class="senario_3"&gt;Senario 3&lt;/button&gt; &lt;button onclick="senario_4()" name="senario_4" class="senario_4"&gt;Senario 4&lt;/button&gt; &lt;button onclick="reset()" name="reset" class="reset"&gt;Reset&lt;/button&gt; &lt;/div&gt; &lt;script type='text/javascript'&gt; function refresh() { document.getElementById("content").innerHTML=window.location.reload(true); } function senario_1() { document.getElementById("senario_1").value="&lt;?php echo $senario_1 ?&gt;"; } function senario_2() { document.getElementById("senario_2").value="&lt;?php echo $senario_2 ?&gt;"; } function senario_3() { document.getElementById("senario_3").value="&lt;?php echo $senario_3 ?&gt;"; } function senario_4() { document.getElementById("senario_4").value="&lt;?php echo $senario_4 ?&gt;"; } function reset() { document.getElementById("senario_1").value=""; document.getElementById("senario_2").value=""; document.getElementById("senario_3").value=""; document.getElementById("senario_4").value=""; } function refresh() { document.getElementById("content").innerHTML=window.location.reload(true); } function senario_1() { document.getElementById("top_left").value="&lt;?php echo $senario_1 ?&gt;"; } function senario_2() { document.getElementById("top_right").value="&lt;?php echo $senario_2 ?&gt;"; } function senario_3() { document.getElementById("bottom_left").value="&lt;?php echo $senario_3 ?&gt;"; } function senario_4() { document.getElementById("bottom_right").value="&lt;?php echo $senario_4 ?&gt;"; } function reset() { document.getElementById("top_left").value=""; document.getElementById("top_right").value=""; document.getElementById("bottom_left").value=""; document.getElementById("bottom_right").value=""; }&lt;/script&gt; &lt;/body&gt; &lt;/html&gt; </code></pre>
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    1. USuser1502809
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      1. POIs there a limitation for document.getElementById("").value?
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    1. COLimitations? Well only form fields have a `value` property, and id needs to be unique. What type of elements are you trying to update? (Also, that `refresh()` method isn't doing what you think it does even if the end result _seems_ the same - `.reload` reloads the page, it doesn't return a value.)
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      1. USnnnnnn
    2. COthe code looks fine.. something else is wrong and there are no limitations in useing document.getElementById...
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      1. USthemis
    3. COShouldn't the `<script type='text/javascript'>` use double quotes. I.E. `<script type="text/javascript">`. Not sure if it would cause a problem, but who knows.
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      1. USJeemusu
 

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