怎么解除浏览器禁用js?

JavaScript011

怎么解除浏览器禁用js?,第1张

准备的材料分别是：chrome浏览器、电脑。

1、首先打开chrome浏览器，点击菜单上的“设置”按钮。

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2、其次，鼠标拉到底部，点击底部的“高级”按钮。

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3、接着，点击“网站设置”按钮。

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4、从弹出的面板，再再点击“JavaScript”菜单。

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5、最后将“允许（推荐）”按钮打开，之后刷新页面即可生效。

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弹出可以用alert，代码如下：

<script>

window.alert("弹出层的内容")

</script>

希望对你有帮助，望采纳！

这个例子可以，不过只对ie有效，firefox不行

<HTML>

<HEAD>

<TITLE> New Document </TITLE>

</HEAD>

<script language="javascript">

//检查插入是否为图片

var img=null

function chkimg(inp)

{

if(img)img.removeNode(true)

img=document.createElement("img")

img.attachEvent("onreadystatechange",isimg)

img.attachEvent("onerror",notimg)

img.src=inp

}

function notimg()

{

alert("您插入的不是图片，请重新选择插入")

}

function isimg()

{

show.insertAdjacentElement("BeforeEnd",img)

show1.innerHTML = "图片大小"+ img.fileSize/1024+"K<br/>图片宽度"+img.offsetWidth+"<br/>图片高度"+img.offsetHeight

}

</script>

<BODY>

<div id="show"></div>

<div id="show1"></div>

<input type="file" id="image" name=""/><input type="button" onclick="chkimg(document.getElementById('image').value)" value="click me "/>

</BODY>

</HTML>