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Example 9.5:
Exceeding the Array Length
Click on the buttons to see what is held in the specified positions in the arrays:
This is the script we used in the HEAD:
<![CDATA[
<SCRIPT LANGUAGE="JAVASCRIPT">
<!--
function makeArray(n) {
this.length = n
for (var i=1; i <= n; i++){
this[i] = null;
}
return this
}
var acode = new makeArray(3)
var area = new makeArray(3)
area[1] = "Alabama "; acode[1] = 205
area[2] = "Alabama "; acode[2] = 334
area[3] = "Alaska "; acode[3] = 907
area[4] = "Alberta "; acode[4] = 403
area[5] = "Antigua "; acode[5] = 268
area[6] = "Arizona "; acode[6] = 520
area[7] = "Arizona "; acode[7] = 602
area[8] = "Arkansas "; acode[8] = 501
area[9] = "Bahamas "; acode[9] = 242
area[10] = "Barbados "; acode[10] = 246
area[11] = "Bermuda "; acode[11] = 441
area[12] = "British Columbia "; acode[12] = 250
area[13] = "British Columbia "; acode[13] = 604
//-->
</SCRIPT>
]]>
And this form:
<![CDATA[
<FORM>
<INPUT TYPE="BUTTON" VALUE="What's in area Position 11?" onclick="alert(area[12])"><P>
<INPUT TYPE="BUTTON" VALUE="What's in acode Position 11?" onclick="alert(acode[12])"><P>
<INPUT TYPE="BUTTON" VALUE="What's in area Position 110?" onclick="alert(area[110])"><P>
<INPUT TYPE="BUTTON" VALUE="What's in area Position 500?" onclick="alert(area[500])"><P>
<INPUT TYPE="BUTTON" VALUE="What's in area Position 0 (area.length)?" onclick="alert(area.length)"><P>
</FORM>
]]>
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