[英]How Can I Interact With <option>
Lets say I have 可以说我有
<select>
<option value="longSleeve">Long Sleeve</option>
<option value="shortSleeve">Short Sleeve</option>
</select>
how can I make my code do something when one is pressed. 当我按下代码时,如何使我的代码执行某些操作。 For example how can I make a variable set to 1 when 'Long Sleeve' is chosen and set the variable to 2 when 'Short Sleeve' is chosen and then if 'Long Sleeve' is chosen again set it back to 1.
例如,如何在选择“长袖”时将变量设置为1,如何在选择“短袖”时将变量设置为2,然后如果再次选择“长袖”,则将变量设置回1。
Also pardon my noobyness at coding 也请原谅我的编码
What you are looking for is the onchange
event handler, in jQuery
you can use .change()
or .on('change', handler)
like this: 您正在寻找的是
onchange
事件处理程序,在jQuery
您可以使用.change()
或.on('change', handler)
如下所示:
var someVariable;
$('select').on('change', function(){
someVariable = this.selectedIndex + 1;
});
with jquery you can always add listeners like 使用jquery,您可以随时添加侦听器,例如
.click()
to any tag on your html code, maybe you can add an id to that tag 到您的html代码上的任何标签,也许您可以向该标签添加ID
<option id="firstOption" value="longSleeve">Long Sleeve</option>
and have something like 并有类似的东西
$("#firstOption").click(function(){
alert("click First option!");
});
hope this help : ) 希望这个帮助:)
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