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/**//*--------------------------------------------
ÃèÊö : Ìí¼ÓеÄÑùʽrule
²ÎÊý : styleSheetsË÷Òý
´úÂë : var ss = new styleSheet(0);
--------------------------------------------*/
var styleSheet = function(n)
...{
var ss;
if (typeof n == "number") ss = document.styleSheets[n];
this.sheet = ss;
this.rules = ss.cssRules?ss.cssRules:ss.rules;
};
/**//*--------------------------------------------
ÃèÊö : ²éÕÒÑùʽrule£¬³É¹¦·µ»Øindex,·ñÔò·µ»Ø-1
²ÎÊý : nΪruleÃû³Æ
´úÂë : var ss = new styleSheet(0);
ss.indexOf("className")
--------------------------------------------*/
styleSheet.prototype.indexOf = function(selector)
...{
for(var i=0;i<this.rules.length;i++)
...{
if(this.rules[i].selectorText==selector)
...{
return i;
}
}
return -1;
};
/**//*--------------------------------------------
ÃèÊö : ɾ³ýÑùʽrule
²ÎÊý : nΪruleË÷Òý»òÕßÃû³Æ
´úÂë : var ss = new styleSheet(0);
ss.rem
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1 ÓÃ||À´Ìî³äĬÈÏÖµ
var status = flight.status || "unknown";
2 ʹÓÃ&&·ÀÖ¹TypeError
flight.equipment.model //throw "TypeError"
flight.equipment && flight.equipment.model //undefined
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var a={},b={},c={};
document.writeln(a===b); //false
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var deleteArray = new Array();
var cnt = 0;
for (i = 0; i < document.forms[0].elements.length; i++ ) {
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