onmouseover onmouseout event problem_html/css_WEB-ITnose-HTML Tutorial-php.cn

onmouseover onmouseout event problem_html/css_WEB-ITnose

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Release： 2016-06-24 12:23:39

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onmouseover

Display DIV2 when the cursor is moved to DIV1, and hide when moved away. Of course, the DIV should also be displayed when the cursor is on DIV2.

The problem is that there is a drop-down box on DIV2. When you click the drop-down box and select the option inside, DIV2 will disappear.

How to save?

Reply to the discussion (solution)

Supplementary DEMO code is as follows:

<html><head><title></title></head><body>    <div onmouseover="ShowDiv()" onmouseout="HideDiv()">        鼠标移到这里显示另一个DIV    </div>    <div id="div2" style="width:200px;height:200px;border:1px solid #f00;display:none;" onmouseover="ShowDiv()" onmouseout="HideDiv()">         <select>            <option>1</option>            <option>2</option>            <option>3</option>        </select>           随便写一些内容        <br />        这里是需要显示的DIV    </div></body><script type="text/javascript">    function ShowDiv() {        document.getElementById('div2').style.display = 'block';    }    function HideDiv() {        document.getElementById('div2').style.display = 'none';    }</script></html>

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DIV2 is outside DIV1, of course it will be hidden, you DIV2 should be overlaid on DIV1.

DIV2 is outside DIV1, so of course it will be hidden. You should cover DIV2 on top of DIV1.

I think this has nothing to do with DIV1. DIV1 is just to trigger the display of DIV2

The key is that after clicking the drop-down box in DIV2, it seems that the cursor has moved out of DIV2, so Onmouseout in DIV2 is triggered, so it is hidden.

Did you find that according to your div layout, your second div is displayed below the first div.

Did you find that according to your div layout, your second div is displayed below the first div.

Yes, it doesn’t matter where it is displayed. This is just a DEMO to illustrate the problem. If you move the cursor to DIV2, DIV2 will still be displayed, but when you click on the drop-down box inside DIV2, it will be hidden.

    <div onmouseover="ShowDiv()" onmouseout="HideDiv(event)">        鼠标移到这里显示另一个DIV    </div>    <div id="div2" style="width:200px;height:200px;border:1px solid #f00;display:none;" onmouseover="ShowDiv()" onmouseout="HideDiv(event)">         <select>            <option>1</option>            <option>2</option>            <option>3</option>        </select>           随便写一些内容        <br />        这里是需要显示的DIV    </div></body><script type="text/javascript">    function ShowDiv() {        document.getElementById('div2').style.display = 'block';    }     function HideDiv(e) {		var e = e || window.event;        var tg = e.target || e.srcElement;        if(tg.tagName == "DIV"){              document.getElementById('div2').style.display = 'none';        }     }	</script>

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The mouseout on the option will trigger the mouseout event of the parent container.

    <div onmouseover="ShowDiv()" onmouseout="HideDiv(event)">        鼠标移到这里显示另一个DIV    </div>    <div id="div2" style="width:200px;height:200px;border:1px solid #f00;display:none;" onmouseover="ShowDiv()" onmouseout="HideDiv(event)">         <select>            <option>1</option>            <option>2</option>            <option>3</option>        </select>           随便写一些内容        <br />        这里是需要显示的DIV    </div></body><script type="text/javascript">    function ShowDiv() {        document.getElementById('div2').style.display = 'block';    }     function HideDiv(e) {		var e = e || window.event;        var tg = e.target || e.srcElement;        if(tg.tagName == "DIV"){              document.getElementById('div2').style.display = 'none';        }     }	</script>

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The mouseout on the option will trigger the mouseout event of the parent container.

Yes, how to solve it?

Um, I don’t understand what you mean. I tried it. Clicking on the drop-down box DIV2 did not disappear. I don’t know how you did it. I did it according to your div layout. My mouse was in It can't be used in div2, because div2 is below div1. If div1 appears, won't div2 be hidden? How can I click on the drop-down box?

Um, I don't understand what you mean. I tried it and clicked on the drop-down box. The box DIV2 has not disappeared. I don’t know how you did it. I did it according to your div layout. My mouse cannot enter div2 because div2 is below div1. If div1 is outside, div2 will be hidden. What else? Click on the drop-down box

无标题文档    <div onmouseover="ShowDiv()" onmouseout="HideDiv(event)">        鼠标移到这里显示另一个DIV    </div>    <div id="div2" style="width:200px;height:200px;border:1px solid #f00;display:none;" onmouseover="ShowDiv()" onmouseout="HideDiv(event)">         <select>            <option>1</option>            <option>2</option>            <option>3</option>        </select>           随便写一些内容        <br />        这里是需要显示的DIV    </div></body><script type="text/javascript">    function ShowDiv() {        document.getElementById('div2').style.display = 'block';    }     function HideDiv(e) {		var e = e || window.event;        var tg = e.target || e.srcElement;        if(tg.tagName == "DIV"){              document.getElementById('div2').style.display = 'none';        }     }	</script>

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The solution is to add event parameters to HideDiv(e) and determine the tagName of the event source

Um, I don’t understand you a bit Sorry, I tried it. Clicking the drop-down box DIV2 did not disappear. I don’t know how you did it. I did it according to your div layout. My mouse can’t enter div2 because div2 is below div1 and out of div1. , isn’t div2 hidden? How can you click on the drop-down box?

Aren’t you inconsistent? It also said that DIV2 did not disappear after clicking the drop-down box in DIV2, and that the mouse could not enter DIV2. If it could not enter, how did you click on the drop-down box?

Instead of clicking on the drop-down box, click on the drop-down box and move to another OPTION.

Aren’t you inconsistent? It also said that DIV2 did not disappear after clicking the drop-down box in DIV2, and that the mouse could not enter DIV2. If it could not enter, how did you click on the drop-down box?

Instead of clicking on the drop-down box, click on the drop-down box and move to another OPTION.
I just put div2 inside div1

The problem is solved, as xiaofanku said solution, thank you