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extreme n00b question

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  • 23-06-2006 12:10pm
    #1
    Scruff
    Registered Users Posts: 4,222 ✭✭✭


    I'm emabarrassed to ask this but i'm drawing a complete blank :o
    How do you read the parameters from a http req? e.g from 
    http://www.foo.com/home.html?param1=test&param3=123

    want to use the parameters in an onload function to make decisions on what to display.


Comments

  • Options
    #2
    seamus
    Registered Users Posts: 68,317 ✭✭✭✭seamus


    What language are you using? Or are you trying to do it through Javascript?


  • Options
    #3
    Scruff
    Registered Users Posts: 4,222 ✭✭✭Scruff


    sorry, yeah using javascript.


  • Options
    #4
    forbairt
    Registered Users Posts: 3,594 ✭✭✭forbairt


    like gandalf said ... YOU SHALL NOT PARSE ...

    oh wait ... in this case I reckon you need to parse the url ...
    <script type="text/Javascript">
function PageQuery(q) {
if(q.length > 1) this.q = q.substring(1, q.length);
else this.q = null;
this.keyValuePairs = new Array();
if(q) {
for(var i=0; i < this.q.split("&").length; i++) {
this.keyValuePairs[i] = this.q.split("&")[i];
}
}
this.getKeyValuePairs = function() { return this.keyValuePairs; }
this.getValue = function(s) {
for(var j=0; j < this.keyValuePairs.length; j++) {
if(this.keyValuePairs[j].split("=")[0] == s)
return this.keyValuePairs[j].split("=")[1];
}
return false;
}
this.getParameters = function() {
var a = new Array(this.getLength());
for(var j=0; j < this.keyValuePairs.length; j++) {
a[j] = this.keyValuePairs[j].split("=")[0];
}
return a;
}
this.getLength = function() { return this.keyValuePairs.length; }
}

function queryString(key){
var page = new PageQuery(window.location.search);
return unescape(page.getValue(key));
}

function displayItem(key){
if(queryString(key)=='false')
{
alert("you didn't enter a ?name=value querystring item.");
}else{
alert(queryString(key));
}
}
</script>
<body onload="displayItem('name');">
<form action="test.php" method="get">

<input name="name" type="text" />
<input type="submit" />
</form>


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