jquery Three ways to set disabled elements to enabled

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jquery Three ways to set disabled elements to enabled_jquery

May 16, 2016 pm 06:49 PM

jquery

Here we find that three workarounds can be used to change the status of elements set to disabled to enabled.
First method: Change the boolean status of disabled, the specific code and explanation are as follows:

Copy the code The code is as follows:

$("button:eq(2)").click(function(){ 
var text2=$("input:text:eq(2)"); 
if( text2.attr("disabled")==false){ 
//Set the disabled attribute of the third text input box to true by setting the disabled boolean attribute 
text2.attr("disabled",true); 
}else{ 
//Remove the disabled attribute by setting the disabled attribute of the third text input box to false
text2.attr("disabled",false); 
} 
 });

Second: Remove the disabled attribute. The specific code and explanation are as follows:

Copy code The code is as follows:

$("button:eq(1)").click(function(){ 
var text2=$("input:text:eq(1) "); 
if(text2.attr("disabled")==false){ 
//Set the second text input box to disabled by setting the value of disabled 
text2.attr("disabled ","disabled"); 
}else{ 
//Delete the disable attribute of the second text input box by removing it
text2.removeAttr("disabled"); 
} 
});

The third method: change the value of disabled, the specific code and explanation are as follows:

Copy code The code is as follows:

$("button:eq(0)").click(function(){ 
var text1=$("input:text:eq (0)"); 
if(text1.attr("disabled")==""){ 
// or text1.attr("disabled")==false 
//By setting disabled The value of will set the first text input box to disabled 
text1.attr("disabled","disabled"); 
}else{ 
//Set the first text input box by overwriting Clear the disabled attribute in 
text1.attr("disabled",""); 
} 
});

The complete sample code is as follows (already Test passed):

Copy code The code is as follows:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 
<html> 
<head> ; <script src="Just import the jquery path"></script> 
<script type="text/javascript"><!-- 
$(document).ready (function () { 
$("button:eq(0)").click(function () { 
var text1 = $("input:text:eq(0)"); 
if (text1.attr("disabled") == "") { 
// or text1.attr("disabled")==false 
//Set the first text input box by setting the value of disabled is disabled 
text1.attr("disabled", "disabled"); 
} else { 
//Clear the disabled attribute in the first text input box by overwriting 
text1 .attr("disabled", ""); 
} 
}); 
$("button:eq(1)").click(function () { 
var text2 = $( "input:text:eq(1)"); 
if (text2.attr("disabled") == false) { 
//Set the second text input box to disabled by setting the value of disabled 
text2.attr("disabled", "disabled"); 
} else { 
//Delete the disable attribute of the second text input box by removing it
text2.removeAttr( "disabled"); 
} 
}); 
$("button:eq(2)").click(function () { 
var text2 = $("input:text:eq (2)"); 
if (text2.attr("disabled") == false) { 
//Set the disabled attribute of the third text input box to true by setting the boolean attribute of disabled 
 text2.attr("disabled", true); 
} else { 
//Remove the disabled attribute by setting the disabled attribute of the third text input box to false
text2.attr("disabled" , false); 
} 
}); 
}); 
// --></script> 
</head> 
<body> 
<button>disabledNull</button> 
<input type="text" value="input something into me!" size="40"/> 
<br/> 
<button>disabledRemove</button> 
<input type="text" value="input something into me!" size="40"/> 
<br/> 
 <button>disabledState</button> 
<input type="text" value="input something into me!" size="40"/> 
</body> 
< /html>

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