限制 html 中输入文本字段中除"/"之外的所有特殊字符

Question

我想限制输入文本字段中除字符/之外的所有特殊字符。我该怎么做？

编辑：我希望我的文本字段像这个输入文本

Answer 1

这个代码做到了：

var specialKeys = new Array();
specialKeys.push(8);  //Backspace
specialKeys.push(9);  //Tab
specialKeys.push(46); //Delete
specialKeys.push(36); //Home
specialKeys.push(35); //End
specialKeys.push(37); //Left
specialKeys.push(39); //Right

function IsAlphaNumeric(e) {
var keyCode = e.keyCode == 0 ? e.charCode : e.keyCode;
var ret = ((keyCode >= 48 && keyCode <= 57) || (keyCode >= 65 && keyCode <= 90) || (keyCode >= 97 && keyCode <= 122) || (specialKeys.indexOf(e.keyCode) != -1 && e.charCode != e.keyCode));
//console.log(e.keyCode);
document.getElementById("error").style.display = ret ? "none" : "inline";
if(e.charCode==47){
ret=true;
document.getElementById("error").style.display ="none";
}
return ret;
}