Question

求高人指点一下，这两段代码是怎么表达的？

尤其是“String.fromCharCode(event.keyCode))"
onpaste = "return regInput(this, /^\d*\.?\d{0,2}$/, ”是什么意思啊？
<tr>
<td valign="top">图书价格：</td>
<td colspan="2">市场价：
<input name="shichangjia" type="text" id="shichangjia" size="6" onkeypress = "return regInput(this, /^\d*\.?\d{0,2}$/, String.fromCharCode(event.keyCode))"
onpaste = "return regInput(this, /^\d*\.?\d{0,2}$/, window.clipboardData.getData('Text'))"
ondrop = "return regInput(this, /^\d*\.?\d{0,2}$/, event.dataTransfer.getData('Text'))">
元，会员价：
<input name="huiyuanjia" type="text" id="huiyuanjia" size="6" onkeypress = "return regInput(this, /^\d*\.?\d{0,2}$/, String.fromCharCode(event.keyCode))"
onpaste = "return regInput(this, /^\d*\.?\d{0,2}$/, window.clipboardData.getData('Text'))"
ondrop = "return regInput(this, /^\d*\.?\d{0,2}$/, event.dataTransfer.getData('Text'))">
元</td>
</tr>
<tr>
<td>其它资料：</td>
<td colspan="2">开本：
<input name="kaiben" type="text" id="kaiben" value="0" size="4">
，版次：
<input name="banci" value="1" size="4" type="text" onkeypress = "return regInput(this, /^[0-9]*$/, String.fromCharCode(event.keyCode))"
onpaste = "return regInput(this, /^[0-9]*$/, window.clipboardData.getData('Text'))"
ondrop = "return regInput(this, /^[0-9]*$/, event.dataTransfer.getData('Text'))">
次，页数：
<input name="yeshu" type="text" id="yeshu" value="0" size="4" onkeypress = "return regInput(this, /^[0-9]*$/, String.fromCharCode(event.keyCode))"
onpaste = "return regInput(this, /^[0-9]*$/, window.clipboardData.getData('Text'))"
ondrop = "return regInput(this, /^[0-9]*$/, event.dataTransfer.getData('Text'))">
页</td>
</tr>

Answer 1

onpaste = "return regInput(this, /^\d*\.?\d{0,2}$/, ”是什么意思啊？
好像是正则表达式