Home Web Front-end JS Tutorial jquery Three ways to set disabled elements to enabled_jquery

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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