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Thread: Call Javascript function from html

  1. #1
    Join Date
    Feb 2013
    Posts
    1

    Call Javascript function from html

    I'm trying to call a javascript function and its not working. I click, but nothing appears to happen. Any help is appreciated

    Code:
    <body>
    
    <script>
    var brushVar;
    
    
    function blue() {
        brushVar = ("#000000");
        alert(brushVar);
    }
    
    function blueN() {
        brushVar = ("#000000");
        alert(brushVar);
    }
    
    function cyan() {
        brushVar = ("#000000");
        alert(brushVar);
    }
    
    function cyanN() {
        brushVar = ("#000000");
        alert(brushVar);
    }
    
    function green() {
        brushVar = ("#000000");
        alert(brushVar);
    }
    
    function greenN() {
        brushVar = ("#000000");
        alert(brushVar);
    }
    
    function purple() {
        brushVar = ("#000000");
        alert(brushVar);
    }
    
    function purpleN() {
        brushVar = ("#000000");
        alert(brushVar);
    }
    
    function red() {
        brushVar = ("000000");
        alert(brushVar);
    }
    
    function redN() {
        brushVar = ("000000");
        alert(brushVar);
    }
    
    function yellow() {
        brushVar = ("#000000");
        alert(brushVar);
    }
    
    function yellowN() {
        brushVar = ("#000000");
        alert(brushVar);
    }
    </script>
    
    
    
    
    
    <div id="buttons" style="position:absolute; width:100%; height:100%>
     <a href="#" onclick="blue()';" >
        <img src="/blue.png"/>
    </a>
    <a href="#" onclick="blueN()';" >
        <img src="blueN.png"/>
    </a>
    <a href="#" onclick="cyan()';" >
        <img src="cyan.png"/>
    </a>
    <a href="#" onclick="cyanN()';" >
        <img src="cyanN.png"/>
    </a>
    <a href="#" onclick="green()';" >
        <img src="green.png"/>
    </a><a href="#" onclick="greenN()';" >
        <img src="greenN.png"/>
    </a>
    <a href="#" onclick="purple()';" >
        <img src="purple.png"/>
    </a>
    <a href="#" onclick="purpleN()';" >
        <img src="purpleN.png"/>
    </a>
    <a href="#" onclick="red()';" >
        <img src="red.png"/>
    </a>
    <a href="#" onclick="redN()';" >
        <img src="redN.png"/>
    </a>
    <a href="#" onclick="yellow()';" >
        <img src="yellow.png"/>
    </a>
    <a href="#" onclick="yellowN()';" >
        <img src="yellowN.png"/>
    </a>
    </div>
    </body>

  2. #2
    Join Date
    Apr 2012
    Posts
    12
    Hi,
    your onclick is in the wrong spot and you don't need to include the semicolon:

    HTML Code:
    <a href="#">
        <img src="/blue.png" onclick="blue()"/>
    </a>
    <a href="#" >
        <img src="blueN.png" onclick="blueN()"/>
    </a>

  3. #3
    Join Date
    Dec 2005
    Location
    TX
    Posts
    7,945
    Without seeing your images, I'm not sure if this is what it is supposed to do, but here's a shorter attempt...
    Code:
    <htm>
    <head>
    <title> Undefined </title>
    
    <script type="text/javascript">
    var brushVar;
    function colours(cInfo) { brushVar = cInfo; alert(brushVar); return false; }
    </script>
    </head>
    
    <body>
    <div id="buttons" style="position:absolute; width:100%; height:100%">
      <a href="#" onclick="return colours('#0000ff')"> <img src="./blue.png" title="blue" /> </a>
      <a href="#" onclick="return colours('transparent')"> <img src="./blueN.png" title="transparent" /> </a>
    
      <a href="#" onclick="return colours('cyan')"> <img src="./cyan.png" title="cyan" /> </a>
      <a href="#" onclick="return colours('transparent')"> <img src="./cyanN.png" title="transparent" /> </a>
    
      <a href="#" onclick="return colours('#00ff00')"> <img src="./green.png" title="green" /> </a>
      <a href="#" onclick="return colours('transparent')"> <img src="./greenN.png" title="transparent" /> </a>
    
      <a href="#" onclick="return colours('purple')"> <img src="./purple.png" title="purple" /> </a>
      <a href="#" onclick="return colours('transparent')"> <img src="./purpleN.png" title="transparent" /> </a>
    
      <a href="#" onclick="return colours('#ff0000')"> <img src="./red.png" title="red" /> </a>
      <a href="#" onclick="return colours('transparent')"> <img src="./redN.png" title="transparent" /> </a>
    
      <a href="#" onclick="return colours('yellow')"> <img src="./yellow.png" title="yellow" /> </a>
      <a href="#" onclick="return colours('transparent')"> <img src="./yellowN.png" title="transparent" /> </a>
    </div>
    </body>
    </html>
    Replace with your images (change path if necessary)

    Or explain further what it is that you are trying to do...

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