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Jquery method to modify the step attribute: 1. Use "$("The element that needs to modify the step attribute")" to obtain the specified element object; 2. Use "element object.attr("step","step The modified value ");" can modify the step attribute value of the specified element.
The operating environment of this tutorial: windows10 system, jquery3.2.1 version, Dell G3 computer.
1. Use $() to obtain the specified element object
$ is a commonly used callback function in JQuery. Defined as "select", the English abbreviation of selector
$ is actually another name for jQuery, and jQuery is a function provided by the jQuery library.
This function can search and select elements in the html document based on the parameters in (). () can not only be IDs, but also various selectors
For example:
$(document) is to select the entire document object
2. Use the attr method to modify the step attribute
attr() method sets or returns the selected Element attributes and values.
When this method is used to return an attribute value, the value of the first matching element is returned.
When this method is used to set attribute values, one or more attribute/value pairs are set for the matching element.
Syntax
Return the value of the attribute:
$(selector).attr(attribute)
Set the attribute and value:
$(selector).attr(attribute,value)
The example is as follows:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>123</title>
<script src="js/jquery.min.js">
</script>
<script>
$(document).ready(function(){
$("button").click(function(){
$("input").attr("step","500");
});
});
</script>
</head>
<body>
<form action="demo-form.php">
<input type="number" name="points" step="3">
</form>
<br>
<button>为元素修改step属性</button>
</body>
</html>Output result:
Recommended related video tutorials: jQuery video tutorial
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