我遇到了ie9必需属性的问题。该属性适用于ie10及以上,但我也想在ie9上使用它。
我试过这个:
$('#submit-button').click(function(){
if($('#message').val() == ''){
alert('Input can not be left blank');
}
});
当您单击提交按钮(检查ID)时,此功能应该运行,然后他将搜索id消息并查看它是否为真。
但遗憾的是,这在ie9中对我不起作用。还有其他解决方案可以解决这个问题吗?
解决了,这是答案(我正在使用laravel)
@if($errors->any())
<br>
<div class="alert alert-danger">
@foreach($errors->all() as $error)
<li>{{ $error }}</li>
@endforeach
</div>
@endif
现在将列出所有错误,因此如果一个或多个输入为空,则警报将显示该错误。
答案 0 :(得分:1)
如果您使用像Modernizr
这样的库,它具有html5功能实现的检测技术,但它没有浏览器检测功能。
解决方案是:
您可以尝试在这样的简单检测脚本中挂钩,然后使用它来做出选择。我还包括版本检测,以防万一。如果您只想检查任何版本的IE,您可以查找值为&#34; MSIE&#34;的navigator.userAgent。
但在对输入进行任何值检查之前使用$.trim()
方法是件好事。
var BrowserDetect = {
init: function() {
this.browser = this.searchString(this.dataBrowser) || "Other";
this.version = this.searchVersion(navigator.userAgent) || this.searchVersion(navigator.appVersion) || "Unknown";
},
searchString: function(data) {
for (var i = 0; i < data.length; i++) {
var dataString = data[i].string;
this.versionSearchString = data[i].subString;
if (dataString.indexOf(data[i].subString) !== -1) {
return data[i].identity;
}
}
},
searchVersion: function(dataString) {
var index = dataString.indexOf(this.versionSearchString);
if (index === -1) {
return;
}
var rv = dataString.indexOf("rv:");
if (this.versionSearchString === "Trident" && rv !== -1) {
return parseFloat(dataString.substring(rv + 3));
} else {
return parseFloat(dataString.substring(index + this.versionSearchString.length + 1));
}
},
dataBrowser: [{
string: navigator.userAgent,
subString: "Edge",
identity: "MS Edge"
}, {
string: navigator.userAgent,
subString: "MSIE",
identity: "Explorer"
}, {
string: navigator.userAgent,
subString: "Trident",
identity: "Explorer"
}, {
string: navigator.userAgent,
subString: "Firefox",
identity: "Firefox"
}, {
string: navigator.userAgent,
subString: "Opera",
identity: "Opera"
}, {
string: navigator.userAgent,
subString: "OPR",
identity: "Opera"
},
{
string: navigator.userAgent,
subString: "Chrome",
identity: "Chrome"
}, {
string: navigator.userAgent,
subString: "Safari",
identity: "Safari"
}
]
};
BrowserDetect.init();
$('#submit-button').click(function() {
if (BrowserDetect.browser == "MSIE" && BrowserDetect.version < 10 && $.trim($('#message').val()) == '') {
alert('Input can not be left blank');
$('#message').focus();
}
});
document.write("You are using <b>" + BrowserDetect.browser + "</b> with version <b>" + BrowserDetect.version + "</b>");
&#13;