js去除输入框中所有的空格和禁止输入空格的方法

<span style="font-family: Arial, Helvetica, sans-serif;"><input type="password" name="password" id="password" onkeydown="return banInputSapce(event);" onKeyup="return inputSapceTrim(event,this);" /></span>

/** 
* 是否去除所有空格 
* @param str 
* @param is_global 如果为g或者G去除所有的 
* @returns 
*/ 
function Trim(str,is_global) 
{ 
var result; 
result = str.replace(/(^\s+)|(\s+$)/g,""); 
if(is_global.toLowerCase()=="g") 
{ 
result = result.replace(/\s/g,""); 
} 
return result; 
}

/** 
* 空格输入去除 
* @param e 
* @returns {Boolean} 
*/ 
function inputSapceTrim(e,this_temp) 
{ 
this_temp.value = Trim(this_temp.value,"g"); 
var keynum; 
if(window.event) // IE 
{ 
keynum = e.keyCode 
} 
else if(e.which) // Netscape/Firefox/Opera 
{ 
keynum = e.which 
} 
if(keynum == 32){ 
return false; 
} 
return true; 
}

/** 
* 禁止空格输入 
* @param e 
* @returns {Boolean} 
*/ 
function banInputSapce(e) 
{ 
var keynum; 
if(window.event) // IE 
{ 
keynum = e.keyCode 
} 
else if(e.which) // Netscape/Firefox/Opera 
{ 
keynum = e.which 
} 
if(keynum == 32){ 
return false; 
} 
return true; 
}