OLPCities/TextArea: Difference between revisions
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You will use textareas when you have muptiple llines of text to display. You specify the number of rows and columns you want. It will have automatically scroolbars if needed. |
You will use textareas when you have muptiple llines of text to display. You specify the number of rows and columns you want. It will have automatically scroolbars if needed. |
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To create an object of the Class you will use the <b>tag</b> TEXTAREA defining a TYPE=TEXT, NAME and COLS and ROWS. Eventually: VALUE. The object will be used in a chain of objects. Something like this will work : |
To create an object of the Class you will use the <b>tag</b> TEXTAREA defining a TYPE=TEXT, NAME and COLS (=size, it's not a table) and ROWS. Eventually: VALUE. <b>The tag TEXTAREA needs to be closed</b>. The object will be used in a chain of objects. Something like this will work : |
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<pre> |
<pre> |
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<html> |
<html> |
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<head> |
<head> |
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<form name="form1"> |
<form name="form1"> |
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<textarea name="ta1" cols=30 rows=10 >Here will appear a message</TEXTAREA> |
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<input type=text name="tb1"> |
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<input type=button name="bt1" onClick="WriteHello()" > |
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</form> |
</form> |
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<script language="Javascript"> |
<script language="Javascript"> |
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function init(){ |
function init(){ |
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document.form1. |
document.form1.bt1.value ="Press the button!"; |
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} |
} |
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function WriteHello(){ |
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document.form1.ta1.value ="HelloWorld!"; |
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document.form1.bt1.value ="WOW!"; |
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} |
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</script> |
</script> |
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</head> |
</head> |
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<center> |
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</center> |
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</pre> |
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[[Image: Textbox.jpg]] |
[[Image: Textbox.jpg]] |
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==Properties== |
==Properties== |
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<pre> |
<pre> |
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value [=String] Is R/w .The String inside the text |
value [=String] Is R/w .The String inside the text area. |
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By example: we can capture what was typed at a textbox with: |
By example: we can capture what was typed at a textbox with: |
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document.form1.tb1.value (or towrite it, like in the example) |
document.form1.tb1.value (or towrite it, like in the example) |
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Revision as of 11:20, 1 October 2006
"TextArea" is a Class that is part of the DOM (Document Object Model). This "library" is referenced automaticaly by the browser of the OLPC station and you don't need to add anything in the program to use it.
You will use textareas when you have muptiple llines of text to display. You specify the number of rows and columns you want. It will have automatically scroolbars if needed.
To create an object of the Class you will use the tag TEXTAREA defining a TYPE=TEXT, NAME and COLS (=size, it's not a table) and ROWS. Eventually: VALUE. The tag TEXTAREA needs to be closed. The object will be used in a chain of objects. Something like this will work :
<html>
<head>
<form name="form1">
<textarea name="ta1" cols=30 rows=10 >Here will appear a message</TEXTAREA>
<input type=button name="bt1" onClick="WriteHello()" >
</form>
<script language="Javascript">
function init(){
document.form1.bt1.value ="Press the button!";
}
function WriteHello(){
document.form1.ta1.value ="HelloWorld!";
document.form1.bt1.value ="WOW!";
}
</script>
</head>
<title>TUTCity</title>
<body bgcolor="yellow" onload=init()>
</html>
Properties
value [=String] Is R/w .The String inside the text area.
By example: we can capture what was typed at a textbox with:
document.form1.tb1.value (or towrite it, like in the example)
size [=n]