假设有两个select option的下拉菜单:
选择下拉菜单中的值通过按钮保存:
怎么能让option为1的时候按钮隐藏 为2的时候才可以点击.在线急等......
附js:
function checkSubmit(){ clearError(); var data = new Array(); var name1 = $('#name').val(); isNotBlank(name1, '名称', data); if (data.length > 0) { showWarning(data); return true; } $('#frmdirection').submit();}
回复讨论(解决方案)
这个需要ajax 的change事件处理哦
<select name="country" id="city"><option value="1"> -请选择- </option><option value="2">test</option></select><input name="save" type="button" class="" value="保存" onclick="javascript:checkSubmit();" style="display:none"/><SCRIPT LANGUAGE="JavaScript" src="jquery.min.js"></SCRIPT><SCRIPT LANGUAGE="JavaScript">$('#city').change(function(){ var val=$(this).val(); if(val==2){ $("input[name=save]").show(); }else{ $("input[name=save]").hide(); }})</SCRIPT>
$('[name="save"]').hide();$('#city').change(function() { if($(this).val() != 1) $('[name="save"]').show();)}
<select name="country" id="city"><option value="1"> -请选择- </option><option value="2">test</option></select><input name="save" type="button" class="" value="保存" onclick="javascript:checkSubmit();" style="display:none"/><SCRIPT LANGUAGE="JavaScript" src="jquery.min.js"></SCRIPT><SCRIPT LANGUAGE="JavaScript">$('#city').change(function(){ var val=$(this).val(); if(val==2){ $("input[name=save]").show(); }else{ $("input[name=save]").hide(); }})</SCRIPT>
这个不引用jquery的库 不可以么? 或者换个库如何? jquery-1.9.1.min.js和这个库有冲突 引用之后到时隐藏了 没有显示啊
$('[name="save"]').hide();$('#city').change(function() { if($(this).val() != 1) $('[name="save"]').show();)}
请问您这个试验是成功的么?
所用的 getPreventDefault() 已不赞成使用。请使用 defaultPrevented 替代。 这个报错
哪来的 getPreventDefault ?
jquery.js 我引用了两个jquery插件 还有一个jquery-1.9.1.min.js
....不对 是这个报错SyntaxError: expected expression, got ')'
都给我整糊涂了 所用的 getPreventDefault() 已不赞成使用。请使用 defaultPrevented 替代。 报错是这个
SyntaxError: expected expression, got ')'这个是因为您写的代码)}这个反了 还没有; 嘻嘻
js 版
<select name="country" id="city" onChange="change(this);"><option value="1"> -请选择- </option><option value="2">test</option></select><input id="save" name="save" type="button" class="" value="保存" onclick="javascript:checkSubmit();" style="display:none"/><SCRIPT LANGUAGE="JavaScript">function change(_this){ var val=_this.options[_this.selectedIndex].value; if(val==2){ document.getElementById('save').style.display="inline"; }else{ document.getElementById('save').style.display="none"; }}</SCRIPT>
谢谢你们,先结个帖。然后再问个问题
名称 这是个单选按钮吧。 在不改变value="1"的情况下 有没有什么方法 让‘名称’ 写在input里

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