I need to convert my PHP code to JavaScript, how do I do it? Because I am making an app for android and I can't use php.

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1.00/5 (3 votes)

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PHP

<meta name="viewport" content="width=device-width, initial-scale=1">
session_start();   
    $rand = array('0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f');
    $color = '#'.$rand[rand(0,15)].$rand[rand(0,15)].$rand[rand(0,15)].$rand[rand(0,15)].$rand[rand(0,15)].$rand[rand(0,15)];
echo "<font color=".$color.">".ColorPreview."</font><br />".$color;
?><br /><script>function myfunction(){var a=confirm('Do you really want to change the color?');if(a==1){javascript:history.go(0);}}</script><input type="submit" value="Change Color" onclick="myfunction()">

Posted 22-Mar-15 11:01am

SkyeEverest

Updated 23-Mar-15 18:35pm

RajeeshMenoth

v3

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Sergey Alexandrovich Kryukov 22-Mar-15 19:26pm

Why?
In all cases, there is no such thing as "convert". Decide what you need to achieve, and, if you cannot do it, explain it in your question, don't forget to explain why, what's the ultimate goals. Even your PHP code does not look like anything reasonable. Set the goal and implement what you need in JavaScrip.
—SA

Afzaal Ahmad Zeeshan 23-Mar-15 21:47pm

The ultimate goal here is totally neither constructive nor helpful. He wants to create an Android application using some third-party framework such as Apache Cordova, to develop Android applications in HTML and JavaScript based style. PHP, in first place, cannot be converted to JavaScript; unless Node.js is used, secondly, JavaScript along would not be enough; he would use third-party libraries, too. Which makes this question totally non-constructive and vague. Please see Solution 1.

2 solutions

Solution 1

Quite possibly there are a lot of points you would first need to consider. PHP is a server-side scripting language (probably based on either C or C++). JavaScript on the other hand is a client-side programming language used in browsers to manipulate the DOM.

They both work separately. You use JavaScript along with PHP, to create a dynamic website; such as ajax requests, loading data etc. They cannot be converted to either one, PHP can never be converted to JavaScript; unless you use Node.js[^] to program your website's server-side script in JavaScript.

Then, Android is programmed in Java; JavaScript is just a prototype for Java language. You cannot create applications in JavaScript. Although now a days software (or simply cross-platform) application development has been made possible through HTML5/CSS3/JavaScript to engage more developers to the platform, using clients or frameworks such as Apache Cordova[^]. But you won't be able to write native JavaScript applications, why? Because you still have to stick to their API. A simple alert('Hello world'); call in browser would create a dialog, but in Android you would have to use Apache Cordova's API to generate dialog boxes and all other stuff. My view about HTML and JavaScript programming is that this is the worst case of programming a software, no efficiency, no full framework support, too many factors slowing down your applications and many other factors are due to which I prefer programming an application in native language; Java would be perfect.

So according to the above points, your point of view of converting PHP code in JavaScript for Android programming is a total vague reason to convert server-side scripting code into a software-level client code. Don't do it!

Posted 23-Mar-15 15:44pm

Afzaal Ahmad Zeeshan

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SkyeEverest · Accepted Answer · 2015-03-23T20:28:00

JavaScript

<meta name="viewport" content="width=device-width, initial-scale=1">
<script>var color = "#";
for (k = 0; k < 3; k++) {
    color += ("0" + (Math.random()*256|0).toString(16)).substr(-2);
}</script><script>document.write('<font color="+ color +">'+ color +'</font>');</script><br /><script>function myfunction(){var a=confirm('Do you really want to change the color?');if(a==1){javascript:history.go(0);}}</script><input type="submit" value="Change Color" onclick="myfunction()">