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I want to know how can I disable and enable the highlighting on an HTML table using Javascript by clicking an html button.
Here are my codes:
tabletest.html
<html>
<head>
<script type="text/javascript">
function disableTable() {
document.getElementbyId('tblTest').disabled = true;
}
function enableTable() {
document.getElementbyId('tblTest').disabled = false;
}
</script>
<style type="text/css">
table#tblTest {
width: 100%;
margin-top: 10px;
font-family: verdana,arial,sans-serif;
font-size:12px;
color:#333333;
border-width: 1px;
border-color: #666666;
border-collapse: collapse;
}
table#tblTest tr.highlight td {
background-color: #8888ff;
}
table#tblTest tr.normal {
background-color: #ffffff;
}
table#tblTest th {
white-space: nowrap;
border-width: 1px;
padding: 8px;
border-style: solid;
border-color: #666666;
background-color: #dedede;
}
table#tblTest td {
border-width: 1px;
padding: 8px;
border-style: solid;
border-color: #666666;
background-color: #ffffff;
}
</style>
</head>
<body>
<table id="tblTest">
<thead>
<tr>
<th>Name</th>
<th>Address</th>
</tr>
</thead>
<tbody>
<tr onMouseOver="this.className='highlight'" onMouseOut="this.className='normal'" >
<td>Tom</td>
<td>UK </td>
</tr>
<tr onMouseOver="this.className='highlight'" onMouseOut="this.className='normal'" >
<td>Hans</td>
<td>Germany</td>
</tr>
<tr onMouseOver="this.className='highlight'" onMouseOut="this.className='normal'" >
<td>Henrik</td>
<td>Denmark</td>
</tr>
<tr onMouseOver="this.className='highlight'" onMouseOut="this.className='normal'" >
<td>Lionel</td>
<td>Italy</td>
</tr>
<tr onMouseOver="this.className='highlight'" onMouseOut="this.className='normal'" >
<td>Ricardo</td>
<td>Brazil</td>
</tr>
<tr onMouseOver="this.className='highlight'" onMouseOut="this.className='normal'" >
<td>Cristiano</td>
<td>Portugal</td>
</tr>
</tbody>
</table>
<input type="button" onclick="disableTable();" value="Disable" />
<input type="button" onclick="enableTable()" value="Enable" />
</body>
</html>
Whenever I click the Disable button the table highlighting is still enabled.
I'm kinda new to this so I really need your help.
884
You cannot disable a table. A table just displays data - in HTML you can only disable form elements like inputs, selects and textareas, so you cannot interact with them anymore (ie type data in it, click it or select an option).
To make a table in HTML, use the <table> tag. Within this table tag, you'll place the <tr>, <th>, and <td> tags. The <tr> tag defines a table row. The <th> tag defines the table header.
An element can be disabled in HTML by setting disable property to true and enabled again by setting disabled=false. By using jQuery, you can grab the element you want to enable or disable and change this property by using the prop() or attr() function, depending upon the version of jQuery you are using.
To disable a button using only JavaScript you need to set its disabled property to false . For example: element. disabled = true . And to enable a button we would do the opposite by setting the disabled JavaScript property to false .
<html>
<head>
<script type="text/javascript">
disable = new Boolean();
function highlight(a) {
if(disable==false)a.className='highlight'
}
function normal(a) {
a.className='normal'
}
</script>
<style type="text/css">
table#tblTest {
width: 100%;
margin-top: 10px;
font-family: verdana,arial,sans-serif;
font-size:12px;
color:#333333;
border-width: 1px;
border-color: #666666;
border-collapse: collapse;
}
table#tblTest tr.highlight td {
background-color: #8888ff;
}
table#tblTest tr.normal {
background-color: #ffffff;
}
table#tblTest th {
white-space: nowrap;
border-width: 1px;
padding: 8px;
border-style: solid;
border-color: #666666;
background-color: #dedede;
}
table#tblTest td {
border-width: 1px;
padding: 8px;
border-style: solid;
border-color: #666666;
background-color: #ffffff;
}
</style>
</head>
<body>
<table id="tblTest">
<thead>
<tr>
<th>Name</th>
<th>Address</th>
</tr>
</thead>
<tbody>
<tr onMouseOver="highlight(this)" onMouseOut="normal(this)" >
<td>Tom</td>
<td>UK </td>
</tr>
<tr onMouseOver="highlight(this)" onMouseOut="normal(this)" >
<td>Hans</td>
<td>Germany</td>
</tr>
<tr onMouseOver="highlight(this)" onMouseOut="normal(this)" >
<td>Henrik</td>
<td>Denmark</td>
</tr>
<tr onMouseOver="highlight(this)" onMouseOut="normal(this)" >
<td>Lionel</td>
<td>Italy</td>
</tr>
<tr onMouseOver="highlight(this)" onMouseOut="normal(this)" >
<td>Ricardo</td>
<td>Brazil</td>
</tr>
<tr onMouseOver="highlight(this)" onMouseOut="normal(this)" >
<td>Cristiano</td>
<td>Portugal</td>
</tr>
</tbody>
</table>
<input type="button" onclick="disable = true;" value="Disable" />
<input type="button" onclick="disable = false;" value="Enable" />
</body>
</html>
Fixed your code. Use a function to check if it's disabled, if it isn't, then highlight. If it is, then don't. Simple enough.
Demo
151
If you want it to "look" disabled or enabled, add class rules to a style sheet and add classes to the table for enabled or disabled.
function disableTable() {
addClassName(document.getElementbyId('tblTest'), 'disabled');
}
function enableTable() {
removeClassName(document.getElementbyId('tblTest'), 'disabled');
}
function trim(s) {
return s.replace(/(^\s+)|(\s+$)/g,'').replace(/\s+/g,' ');
}
function hasClassName (el, cName) {
var re = new RegExp('(^|\\s+)' + cName + '(\\s+|$)');
return el && re.test(el.className);
}
function addClassName(el, cName) {
if (!hasClassName(el, cName)) {
el.className = trim(el.className + ' ' + cName);
}
}
function removeClassName(el, cName) {
if (hasClassName(el, cName)) {
var re = new RegExp('(^|\\s+)' + cName + '(\\s+|$)','g');
el.className = trim(el.className.replace(re, ''));
}
}
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