将变量应用于javascript函数
需要知道如何将变量应用于javascript函数。我目前正试图让我的代码正常工作,但它没有将我的值识别为函数类型将变量应用于javascript函数,javascript,html,dom,Javascript,Html,Dom,需要知道如何将变量应用于javascript函数。我目前正试图让我的代码正常工作,但它没有将我的值识别为函数类型 <!DOCTYPE html> <html> <body onload="myFunction()"> <select> <option>1</option> </select> <br/> <select> <option>1</o
<!DOCTYPE html>
<html>
<body onload="myFunction()">
<select>
<option>1</option>
</select>
<br/>
<select>
<option>1</option>
</select>
<script>
function myFunction()
{
if(typeof document.body.ontouchstart == "undefined"){actionIn = "onmouseover"; actionOut = "onmouseout"}
else{actionIn = "ontouchstart"; actionOut = "ontouchend";}
document.write(actionIn+" "+actionOut);
var elem = document.getElementsByTagName("SELECT");
for (var i = 0;i < elem.length; i++){
elem[i].actionIn = function(){this.style.background='red';}
elem[i].actionOut = function(){this.style.background='';}
}
}
</script>
</body>
</html>
1.
1.
函数myFunction()
{
if(typeof document.body.ontouchstart==“undefined”){actionIn=“onmouseover”;actionOut=“onmouseout”}
else{actionIn=“ontouchstart”actionOut=“ontouchend”}
文件写入(actionIn+“”+actionOut);
var elem=document.getElementsByTagName(“选择”);
对于(变量i=0;i
您正在尝试编写
elem[i][actionIn] = ...;
SyntaxError:后面缺少名称。运算符[Break On This Error]elem[i].[actionIn]=function(){This.style.background='red';}语法错误:后面缺少名称。运算符[Break On This Error]elem[i].[actionIn]=function(){This.style.background='red';}@user2309465:Yes;您不应该有
。(就像[i]
)