php 實現打印預覽的功能

<inputid="btnPrint" type="button" value="打印"onclick="javascript:window.print();" />

<inputid="btnPrint" type="button" value="打印預覽" onclick=preview(1)/>

<styletype="text/css" media=print>

.noprint{display : none}

</style>

<pclass="noprint">不須要打印的地方</p>

<script>

functionpreview(oper)

{

if (oper <10)

{

bdhtml=window.document.body.innerHTML;//獲取當前頁的html代碼

sprnstr="<!–startprint"+oper+"–>";//設置打印開始區域

eprnstr="<!–endprint"+oper+"–>";//設置打印結束區域

prnhtml=bdhtml.substring(bdhtml.indexOf(sprnstr)+18);//從開始代碼向后取html

prnhtmlprnhtml=prnhtml.substring(0,prnhtml.indexOf(eprnstr));//從結束代碼向前取html

window.document.body.innerHTML=prnhtml;

window.print();

window.document.body.innerHTML=bdhtml;

} else {

window.print();

}

}

</script>

<p>XXXXX</p>

<!–startprint1–>要打印的內容<!–endprint1–>

<inputid="btnPrint" type="button" value="打印"onclick="javascript:window.print();" />

<inputid="btnPrint" type="button" value="打印預覽" onclick=preview(1)/>

<styletype="text/css" media=print>

.noprint{display : none}

</style>

<pclass="noprint">不須要打印的地方</p>

<script>

functionpreview(oper)

{

if (oper <10)

{

bdhtml=window.document.body.innerHTML;//獲取當前頁的html代碼

sprnstr="<!–startprint"+oper+"–>";//設置打印開始區域

eprnstr="<!–endprint"+oper+"–>";//設置打印結束區域

prnhtml=bdhtml.substring(bdhtml.indexOf(sprnstr)+18);//從開始代碼向后取html

prnhtmlprnhtml=prnhtml.substring(0,prnhtml.indexOf(eprnstr));//從結束代碼向前取html

window.document.body.innerHTML=prnhtml;

window.print();

window.document.body.innerHTML=bdhtml;

} else {

window.print();

}

}

</script>

<p>XXXXX</p>

<!–startprint1–>要打印的內容<!–endprint1–>