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How to implement click plus one in javascript
- WBOYOriginal
- 2022-01-19 11:23:094186browse
Method: 1. Bind the click event to the button element and specify the time processing function; 2. In the event processing function, use the " " incremental operator to achieve the calculation plus one effect, the syntax is "specify element object.value;".
The operating environment of this tutorial: Windows 10 system, JavaScript version 1.8.5, Dell G3 computer.
How to implement click plus one in javascript
#If you want to use JavaScript to implement click plus one, you can use the " "incremental operator.
The example is as follows:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
</head>
<body>
<input type="text" value="0"><br><br>
<input type="submit" value="加一">
<script type="text/javascript">
var text = document.getElementsByTagName('input')[0];
var add = document.getElementsByTagName('input')[1];
add.onclick = function numberadd(){
text.value++;
}
</script>
</body>
</html>Output result:
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