我有两个简单表单的HTML页面。我想在用户点击“提交”时使用localStorage保存index.html的文本输入，并使该值显示在html1.html的文本字段中。我认为我的 retrieveName（）函数的实现可能存在问题。可以改进哪些方法使其正常工作？
的index.html
width : x;
html1.html
<form name="form1" method="post" action="html1.html">
<label>Name:
<input type="text" id="fname" name="lastName" />
</label>
<input type="submit" name="submitName" value="Submit" onclick = "submitName()">
<script>
function submitName() {
var userName = document.getElementById("fname");
localStorage.setItem("lastName", userName.value);
}
</script>
</form>
答案 0 :(得分：0)
localStorage.getItem("lastName");
这应该有效。您存储的密钥与检索值的密钥相同。
https://developer.mozilla.org/en-US/docs/Web/API/Storage/LocalStorage
答案 1 :(得分：0)
详细信息在代码段和PLUNKER中进行了评论。
由于SO上的沙箱是严格的，所以Snippet将无法正常运行，因此请查看Plunker。顺便说一下，主要问题是你没有使用与getItem()
setItem()
On the first page: setItem('CAT', animal.value)
On the second page: getItem('DOG');
那是你基本上做的。在您的案例中，'CAT' = "lastName"和'DOG' = "textValue"具体。
<!doctype html>
<html>
<head>
<meta charset='utf-8'>
<meta name="viewport" content="width=device-width,initial-scale=1, user-scalable=no">
</head>
<body onload='retrieveName()'>
<form name="form2">
<fieldset>
<legend>HTML1</legend>
<label>Last Name:
<input type="text" id="lastName" />
</label>
<input type="submit" id="submitLastName" value="Save" />
</fieldset>
<p>(2) Click <kbd>Save</kbd>
</p>
</form>
<script>
// Reference the input lastName
var x = document.getElementById("lastName");
/*
| Retrieve the stored data with the
| CORRECT KEY I.E. dataName
| Assign the value of dataName as the
| value of x
*/
function retrieveName(e) {
var text = localStorage.getItem("dataName");
x.value = text;
}
</script>
</body>
</html>
<!doctype html>
<html>
<head>
<meta charset='utf-8'>
<meta name="viewport" content="width=device-width,initial-scale=1, user-scalable=no">
</head>
<body onload='retrieveName()'>
<form name="form2">
<fieldset>
<legend>HTML1</legend>
<label>Last Name:
<input type="text" id="lastName" />
</label>
<input type="submit" id="submitLastName" value="Save" />
</fieldset>
<p>(2) Click <kbd>Save</kbd>
</p>
</form>
<script>
// Reference the input lastName
var x = document.getElementById("lastName");
/*
| Retrieve the stored data with the
| CORRECT KEY I.E. dataName
| Assign the value of dataName as the
| value of x
*/
function retrieveName(e) {
var text = localStorage.getItem("dataName");
x.value = text;
}
</script>
</body>
</html>