大家好我正在使用下面的代码上传图像而不刷新页面而且效果很好..但是我想使用php并回显javascript,但双引号或单引号出错...查看我的代码吼叫
<script>
function ajaxFileUpload(upload_field)
{
var re_text = /\.jpg|\.gif|\.jpeg/i;
var filename = upload_field.value;
if (filename.search(re_text) == -1) {
alert("File should be either jpg or gif or jpeg");
upload_field.form.reset();
return false;
}
document.getElementById("picture_preview").innerHTML = "<div><img src="images/ajax-loader.gif" border="0" /></div>";
upload_field.form.action = "upload-picture.php";
upload_field.form.target = "upload_iframe";
upload_field.form.submit();
upload_field.form.action = "";
upload_field.form.target = "";
return true;
}
</script>
<style>
#picture_preview img {
height:150px;
border:2px dotted #666666;
}
</style>
<div id="picture_preview" class="myclass"></div>
<!-- iframe used for ajax file upload-->
<!-- debug: change it to style="display:block" -->
<iframe name="upload_iframe" id="upload_iframe" style="display:none;"></iframe>
<!-- iframe used for ajax file upload-->
<form name="pictureForm" method="post" autocomplete="off" enctype="multipart/form-data">
<div>
<span>Upload Picture :</span>
<input type="file" name="picture" id="picture" onchange="return ajaxFileUpload(this);" />
<span id="picture_error"></span>
</div>
</form>
我试图像这样回复javascript代码:
<?php
echo '
<script>
function ajaxFileUpload(upload_field)
{
var re_text = /\.jpg|\.gif|\.jpeg/i;
var filename = upload_field.value;
if (filename.search(re_text) == -1) {
alert("File should be either jpg or gif or jpeg");
upload_field.form.reset();
return false;
}
document.getElementById("picture_preview").innerHTML = "<div><img src="images/ajax-loader.gif" border="0" /></div>";
upload_field.form.action = "upload-picture.php";
upload_field.form.target = "upload_iframe";
upload_field.form.submit();
upload_field.form.action = "";
upload_field.form.target = "";
return true;
}
</script>';
?>
我在这一行得到了错误:
document.getElementById("picture_preview").innerHTML = "<div><img src="images/ajax-loader.gif" border="0" /></div>";
答案 0 :(得分:2)
我在这一行得到了错误:`
document.getElementById("picture_preview").innerHTML = "<div><img src="images/ajax-> loader.gif" border="0" /></div>";
首先,你没有逃避双引号......
document.getElementById("picture_preview").innerHTML = "<div><img src=\"images/ajax-loader.gif\" border=\"0\" /></div>";
参考
在大多数/所有编程语言中,你不能做这样的事情:
var = "John said "hello" and I said "hello to you too!"";
您需要使用double和single的组合替换引号,如下所示:
var = 'John said "hello" and I said "hello to you too!"';
...或逃避您的报价如下:
var = "John said \"hello\" and I said \"hello to you too!\"";