如何在JavaScript中增加页面加载时文本字段的值?
问题描述：
我想增加JavaScript中页面加载时文本字段的值. 例如
I want to increase the value of text field on page load in JavaScript. For example
<input type="text" name="itemquantity[]" value="1"/>
页面加载后应该像
<input type="text" name="itemquantity[]" value="2"/>
答
您可以执行以下操作:
<input id="myid" type="text" name="itemquantity[]" value="1"/>
<script>
localStorage['myid'] =
document.getElementById('myid').value =
parseInt(localStorage['myid'] || '0', 10) + 1;
</script>
页面每次加载时，该值将增加1，初始值为1.
At each load of the page, the value will be incremented by 1, with initial value being 1.