problem

**mendelor** · 10-20-2011, 09:17 PM

hi everyone
i have a little problem
my file content a div tag like that:
<div id='my' style='color:black'>abcdef</div>
<button type='button' onclick='fff();'>click</button>

and i want by clicking the button to call a function fff();
that will change the color of a the letter 'a' to red so i tried:
<script type='text/javascript'>
function fff()
{
var a = document.getElementById('my');
a.childNodes[0].nodeValue[0].style.color='red'; /* i know nodeValue is wrong */

}
</script>

could someone helps me. thanks meni

**vwphillips** · 10-21-2011, 02:54 AM

Code:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">

<head>
  <title></title>
</head>

<body>
<div id='my' style='color:black'>abcdef</div>
<button type='button' onclick='fff();'>click</button>

and i want by clicking the button to call a function fff();
that will change the color of a the letter 'a' to red so i tried:
<script type='text/javascript'>
function fff()
{
document.getElementById('my').style.color='red'; /* i know nodeValue is wrong */

}
</script>

</body>

</html>

**mendelor** · 10-21-2011, 06:25 AM

with my problem

**savvykms** · 10-22-2011, 12:09 AM

You want the 'a' in "abcdef", the innerHTML/innerText of document.getElementById("my") to change it's style.color to "red"?

Perhaps these two methods (searching/replacing) and substring replacing will help:

PHP Code:


<html>

<head>

</head>

<body>



<script language="javascript" type="text/javascript">



function searchChange(ele,substr,color) {

var t = ele.innerText;

var r = "";



  for (i = 0; i < t.length; i++) {

  var matches = 0;

    if (i <= t.length-substr.length) {

      for (s = 0; s < substr.length; s++) {

        if (t.charAt(i+s) == substr.charAt(s)) {

        matches++;

        }

      }

    }

    if (matches == substr.length) {

    r += "<font style=\"color: "+color+"; \">"+substr+"</font>";

    i += substr.length-1;

    }

    else {

    r += t.charAt(i);

    }

  }



//r = t.replace(substr, "<font style=\"color: "+color+"; \">"+substr+"</font>");



ele.innerHTML = r;

}

function setChange(ele,pos,len,color) {

//t = text; a,b,c = substrings; r = result

var t = ele.innerText;

var a = t.substr(0,pos);

var b = t.substr(pos,len);

var c = t.substr(pos+len, t.length); //t.length is not technically required here

var r = a+"<font style=\"color: "+color+"; \">"+b+"</font>"+c;

ele.innerHTML = r;

}



</script>



<div id="my">abcdef one more a letter</div>



<input type="button" value="Search Change" onclick="searchChange(document.getElementById('my'),'abc','red')">

<input type="button" value="Set Change" onclick="setChange(document.getElementById('my'),3,3,'red')">



</body>

</html>

**JMRKER** · 10-22-2011, 07:18 PM

Is this closer to your desires? ...

Code:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">

<head>
  <title></title>
</head>

<body>
<div id='my' style='color:black'>abcdef</div>
<button type='button' onclick='fff();'>click</button>
<br>
and i want by clicking the button to call a function fff();
that will change the color of a the letter 'a' to red so i tried:
<script type='text/javascript'>
function fff() {
  var tmp = document.getElementById('my').innerHTML;
  tmp = '<span style="color:red">'+tmp.charAt(0)+'</span><span>'+tmp.substr(1)+'</span>';
  document.getElementById('my').innerHTML = tmp;
}
</script>

</body>

</html>

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