Javascript 将 PHP Json 转换成 javascript 数组
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Javascript Convert PHP Json into a javascript array
提问by Miguel P
So hi guys,
嗨，伙计们，
lets make this very clear. In php i used json_encode(...) and then got the value in javascript, looks as the following:
让我们说得很清楚。在 php 中，我使用了 json_encode(...) 然后在 javascript 中得到了值，如下所示：
["float","float","float","float"] // PS: This is a string...
And i would like to make this into a normal javascript array, like so:
我想把它变成一个普通的 javascript 数组，像这样：
Arr[0] // Will be float
Arr[1] // Will be float
Arr[2] // Will be float
Arr[3] // Will be float
And now I'm asking you, how is this possible?
现在我问你，这怎么可能？
Thank You
谢谢你
回答by Amber
It sounds like you're retrieving a JSON string in JavaScript (perhaps via AJAX?). If you need to make this into an actual array value, you'd probably want to use JSON.parse().
听起来您正在 JavaScript 中检索 JSON 字符串（也许通过 AJAX？）。如果你需要把它变成一个实际的数组值，你可能想要使用JSON.parse().
var retrievedJSON = '["float","float","float","float"]'; // normally from AJAX
var myArray = JSON.parse(retrievedJSON);
If you're actually writing out a value into the page, rather than using AJAX, then you should be able to simply echo the output of json_encodedirectly, without quoting; JSON itself is valid JavaScript.
如果您实际上是在页面中写出一个值，而不是使用 AJAX，那么您应该能够简单地直接回显 的输出json_encode，而无需引用；JSON 本身是有效的 JavaScript。
var myArray = <?php echo json_encode($myPhpArray); ?>;
回答by Brad Christie
var myArray = <?= json_encode($myPhpArray); ?>;
Pretty simple. ;-)
很简单。;-)
Example:
例子：
<?php
$myPhpArray = array('foo', 'bar', 'baz');
?>
<script type="text/javascript">
var myJsArray = <?= json_encode($myPhpArray); ?>;
</script>
Should output (view-source):
应该输出（查看源代码）：
<script type="javascript">
var myJsArray = ["foo","bar","baz"];
</script>
回答by ballsDeep
I reccomend using jquery. The php file should look as such ...
我推荐使用 jquery。php 文件应该是这样的......
//location.php
<?php
$change = array('key1' => $var1, 'key2' => $var2, 'key3' => $var3);
echo json_encode($change);
?>
Then the jquery script ...
然后jquery脚本...
<script>
$.get("location.php", function(data){
var duce = jQuery.parseJSON(data);
var art1 = duce.key1;
var art2 = duce.key2;
var art3 = duce.key3;
});
</script>
