我创建了一个示例脚本来添加和删除head中的元标记。但是Android 2.2似乎不尊重其删除。但是,例如在单击时它确实尊重添加metatag。如何通过javascript使其尊重标记的删除并恢复默认视口?
<script type="text/javascript">
$(document).ready(function(){
function initMeta(){
var headID = document.getElementsByTagName("head")[0];
var metaNode = document.createElement('meta');
metaNode.name = 'viewport';
metaNode.content = 'width=device-width, initial-scale=1.0, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0';
metaNode.id = 'metatag';
headID.appendChild(metaNode);}
function closeMeta(){
$("#metatag").remove();}
$("#add").click(function(){initMeta();alert("meta opened");});
$("#del").click(function(){closeMeta();alert("meta closed");});
});
</script>
<input name="add" type="button" value="add metatag" id="add"/>
<input name="del" type="button" value="delete metatag" id="del"/>