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HomeBackend DevelopmentPHP Tutorial在js中 怎么循环输出php数组

在js中 如何循环输出php数组

本帖最后由 A9925 于 2014-11-20 18:11:40 编辑 现在进退两难,退到php,js要加载东西。
                          退到js, 又想要取出php的数据变量。

怎么办?请教了,谢谢!

<br /><script type="text/javascript"><br />					<br /><br />				var tree_gen="<?php echo $arr[0]['ConstrProjName'];?>";  //可以赋到值<br />				var tree_len="<?php echo count($arr);?>"			      //可以赋到值<br /><br />				if (document.getElementById) {	<br />					var tree = new WebFXTree(tree_gen);<br />					tree.setBehavior('classic');<br /><br />						for (var i=0;i<tree_len;i++){<br />				<br />						var e = new WebFXTreeItem("<?php echo $arr[i]['ConstrProjName'];?>");  //此时,i 变量得不到值,也就是不能用。 后边的document.write也都输出不了了。<br />						tree.add(e);<br />						document.write("888");<br /><br />                       <br />						}<br />					document.write(tree);<br />					tree.expandAll();<br />				}<br /><br />					document.write("999");<br />					</script><br />


var e = new WebFXTreeItem("");  
这里边的$arr[i]['ConstrProjName'] 是要动态获取用的值。

现在怎么整啊?给开个窍吧,谢谢!

------解决思路----------------------
php数组序列化为js数组js就可以直接用了
------解决思路----------------------
 var e = new WebFXTreeItem(""); 
你这句话不能这么写因为在服务器端执行PHP时不会解析你的js东西你那个i不会识别的。
当发到客户端时你的PHP代码又没有了所以括号里面永远不会识别的。
你应该在第六行将PHP数组$arr转换成js数组或者JSON对象(我推荐用JSON对象)
然后把你的for循环变成for in循环遍历你接收那个对象就行了。
------解决思路----------------------
改成这样试试。

<br /><script type="text/javascript"><br />                     <br /> <br />var tree_gen="<?php echo $arr[0]['ConstrProjName'];?>";  //可以赋到值<br />var tree_len="<?php echo count($arr);?>"                  //可以赋到值<br />var arr = <?php echo json_encode($arr) ?>;                // 先把php数组转为json<br /><br />if (document.getElementById) {   <br />    var tree = new WebFXTree(tree_gen);<br />    tree.setBehavior('classic');<br /><br />        for (var i=0;i<tree_len;i++){<br /> <br />        var e = new WebFXTreeItem(arr[i]['ConstrProjName']); // 改为读json数组<br />        tree.add(e);<br />        document.write("888");<br /><br />        <br />        }<br />    document.write(tree);<br />    tree.expandAll();<br />}<br /><br />document.write("999");<br /></script><br />
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