Javascript 将字符串转换为有效的json对象
我试图从包含表单值的字符串返回一个有效的JSON对象，但是，使用JavaScript JSON.parse返回一个char值数组，而不是JSON对象。下面是我的代码：Javascript 将字符串转换为有效的json对象,javascript,jquery,json,forms,serializearray,Javascript,Jquery,Json,Forms,Serializearray,我试图从包含表单值的字符串返回一个有效的JSON对象，但是，使用JavaScript JSON.parse返回一个char值数组，而不是JSON对象。下面是我的代码： <!DOCTYPE html> <html> <head> <title>Select Browser Options</title> <meta http-equiv="Content-Type" content="text/html; c
<!DOCTYPE html>
<html>
<head>
<title>Select Browser Options</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<script src='https://code.jquery.com/jquery-2.0.3.js'></script>
</head>
<body style="width: 640px;height: 480px;">
<div id="hiddenX" style="display:none;"></div>
<div id="hiddenY" style="display:none;"></div>
<div id="searchPrefs">
<form id="searchPreferences">
<div id="searchWrapper">
<input class="id" type="text" name="id" value="googleSearch">
<input class="label" type="text" name="label" value="Google Search">
<input class="iconURL" type="text" name="iconURL" value="https://www.google.com/favicon.ico">
<input class="tabURL" type="text" name="tabURL" value="https://www.google.com/search?q=">
<br></br>
<input class="id" type="text" name="id" value="googleMapSearch">
<input class="label" type="text" name="label" value="Google Maps">
<input class="iconURL" type="text" name="iconURL" value="https://maps.gstatic.com/favicon3.ico">
<input class="tabURL" type="text" name="tabURL" value="https://www.google.com/maps/preview/search/">
<br></br>
<input class="id" type="text" name="id" value="ddgSearch">
<input class="label" type="text" name="label" value="Duck Duck Go Search">
<input class="iconURL" type="text" name="iconURL" value="https://duckduckgo.com/favicon.ico">
<input class="tabURL" type="text" name="tabURL" value="https://duckduckgo.com/?q=">
<br></br>
<input class="id" type="text" name="id" value="imageSearch">
<input class="label" type="text" name="label" value="Google Image Search">
<input class="iconURL" type="text" name="iconURL" value="data:image/gif;base64,R0lGODlh…GbsuF0PHJq9WipnYJB9/UmFyIAOw==">
<input class="tabURL" type="text" name="tabURL" value="https://www.google.com/search?tbm=isch&q=">
<br></br>
<input class="id" type="text" name="id" value="bingSearch">
<input class="label" type="text" name="label" value="Bing Search">
<input class="iconURL" type="text" name="iconURL" value="http://bing.com/favicon.ico">
<input class="tabURL" type="text" name="tabURL" value="http://www.bing.com/search?q=">
<br></br>
<input class="id" type="text" name="id" value="thesaurusSearch">
<input class="label" type="text" name="label" value="Thesaurus Search">
<input class="iconURL" type="text" name="iconURL" value="http://static.sfdict.com/thescloud/favicon.ico">
<input class="tabURL" type="text" name="tabURL" value="http://thesaurus.com/browse/">
<br></br>
<input class="id" type="text" name="id" value="wikipediaSearch">
<input class="label" type="text" name="label" value="Wikipedia Search">
<input class="iconURL" type="text" name="iconURL" value="https://bits.wikimedia.org/favicon/wikipedia.ico">
<input class="tabURL" type="text" name="tabURL" value="https://en.wikipedia.org/w/index.php?search=">
<br></br>
<input class="id" type="text" name="id" value="wiktionarySearch">
<input class="label" type="text" name="label" value="Wiktionary Search">
<input class="iconURL" type="text" name="iconURL" value="https://bits.wikimedia.org/favicon/wiktionary/en.ico">
<input class="tabURL" type="text" name="tabURL" value="https://en.wiktionary.org/w/index.php?search=">
<br></br>
</div>
<a id="more" href="#"></a>
<br></br>
<input id="save" type="submit" value="save" name="save">
</form>
<div id="output"></div>
<script>
$('#searchPreferences').submit(function(event) {
var justValues = "[";
var formJson = $('#searchPreferences').serializeArray();
var lastKey = $("input").length - 2;
$.each(formJson, function(i, field) {
if (field.name === "id") {
justValues += '{"' + field.name + '":"' + field.value + '",';
} else if (field.name === "tabURL" && i === lastKey) {
justValues += '"' + field.name + '":"' + field.value + '"}';
} else if (field.name === "tabURL") {
justValues += '"' + field.name + '":"' + field.value + '"},';
} else {
justValues += '"' + field.name + '":"' + field.value + '",';
}
});
justValues += "]";
JSON.parse(justValues);
for(var o in justValues){
console.log(o+':'+justValues[o]);
}
console.log(justValues);
event.preventDefault();
});
</script>
</div>
</body>
</html>
看起来您没有对JSON.parse的返回值做任何操作。我想你想做的是
justValues = JSON.parse(justValues);
这应该能让它工作。然而，这是一种间接的方式来获得你想要的东西。如果您想要的是JavaScript对象，为什么不直接构建该对象呢？而不是构建一个JSON字符串，然后将其解析为一个对象。当然可能是Duh的重复！我花了好几个小时绞尽脑汁，想知道为什么它没有返回我想要的东西，我只是需要一双新的眼睛。谢谢
justValues = JSON.parse(justValues);