Question

我有一些html页面，它们是alert(some_value)。

我想使用Javascript来获取警告框内的文本。我想要像document.querySeletor这样的东西，我通常用它来获取页面中的元素。

但我找不到合适的api来实现这一点，那么任何人都可以给我一些建议吗？

Answer 1

您无法访问警告框（我认为），但您可以使用div创建自己的自定义警报，并且您可以访问内容... jquery警报或许多警报插件是avilabe ...您可以从这些获得价值

Answer 2

您是否打算创建自定义提醒？

然后按照此代码

＆＃13;

<script>
function CustomAlert(){
    this.render = function(dialog){
        var winW = window.innerWidth;
        var winH = window.innerHeight;
        var dialogoverlay = document.getElementById('dialogoverlay');
        var dialogbox = document.getElementById('dialogbox');
        dialogoverlay.style.display = "block";
        dialogoverlay.style.height = winH+"px";
        dialogbox.style.left = (winW/2) - (550 * .5)+"px";
        dialogbox.style.top = "100px";
        dialogbox.style.display = "block";
        document.getElementById('dialogboxhead').innerHTML = "Acknowledge This Message";
        document.getElementById('dialogboxbody').innerHTML = dialog;
        document.getElementById('dialogboxfoot').innerHTML = '<button onclick="Alert.ok()">OK</button>';
    }
	this.ok = function(){
		document.getElementById('dialogbox').style.display = "none";
		document.getElementById('dialogoverlay').style.display = "none";
	}
}
var Alert = new CustomAlert();
</script>

＆＃13;

<style>
#dialogoverlay{
	display: none;
	opacity: .8;
	position: fixed;
	top: 0px;
	left: 0px;
	background: #FFF;
	width: 100%;
	z-index: 10;
}
#dialogbox{
	display: none;
	position: fixed;
	background: #000;
	border-radius:7px; 
	width:550px;
	z-index: 10;
}
#dialogbox > div{ background:#FFF; margin:8px; }
#dialogbox > div > #dialogboxhead{ background: #666; font-size:19px; padding:10px; color:#CCC; }
#dialogbox > div > #dialogboxbody{ background:#333; padding:20px; color:#FFF; }
#dialogbox > div > #dialogboxfoot{ background: #666; padding:10px; text-align:right; }
</style>

＆＃13;

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
</head>
<body>
<div id="dialogoverlay"></div>
<div id="dialogbox">
  <div>
    <div id="dialogboxhead"></div>
    <div id="dialogboxbody"></div>
    <div id="dialogboxfoot"></div>
  </div>
</div>
<h1>My web document content ...</h1>
<h2>My web document content ...</h2>
<button onclick="alert('You look very pretty today.')">Default Alert</button>
<button onclick="Alert.render('You look very pretty today.')">Custom Alert</button>
<button onclick="Alert.render('And you also smell very nice.')">Custom Alert 2</button>
<h3>My web document content ...</h3>
</body>
</html>

＆＃13;

它可能不是在这里运行但是用这个css和脚本创建一个html页面它将工作10000％

如何在警报框中获取文本？

2 个答案:

您是否打算创建自定义提醒？