开发者

problem with loop -JS

i have many pieces of code like:

<script type="text/javascript">
dojo.query("body").delegate("#input0 > select.estatistica", "onchange", function(evt){
        dojo.xhrPost({
            url: "drop2.php",
            handleAs: "json",
            postData:开发者_高级运维 "data=" + $(this).val(),
            preventCache: true,
            load: function(json) {
                $m0 = [];

                for (var i = 1; i < 10; i++) {
                    $m0.push(parseFloat(json[i]["valor" + i]));
                }
                dojo.addOnLoad(refreshChar0);

            }
        });
    });
</script>


<script type="text/javascript">
dojo.query("body").delegate("#input1 > select.estatistica", "onchange", function(evt){
        dojo.xhrPost({
            url: "drop2.php",
            handleAs: "json",
            postData: "data=" + $(this).val(),
            preventCache: true,
            load: function(json) {
                $m1 = [];

                for (var i = 1; i < 10; i++) {
                    $m1.push(parseFloat(json[i]["valor" + i]));
                }
                dojo.addOnLoad(refreshChart1);
            }
        });
    });
</script>

i tried this loop, but i am not sure about the script. Probably i have syntax errors.

<script type="text/javascript">
for(x=0; x<10; x++) {
dojo.query("body").delegate("'#input'+x+'> select.estatistica'", "onchange", function(evt) {
        dojo.xhrPost({
            url: "drop2.php",
            handleAs: "json",
            postData: "data=" + $(this).val(),
            preventCache: true,
            load: function(json) {
                $m+x = [];

                for (var i = 1; i < 10; i++) {
                    $m+x.push(parseFloat(json[i]["valor" + i]));
                }
                dojo.addOnLoad(refreshChart+x);
            }
        });
    });
}
</script>

thanks


to create a variable name dynamicaly you have to use bracket notation

e.g: this['$m'+x] or window['$m'+x] will create a variable called $m1 where x = 1

try:

window['foo' + 'bar'] = 'hello';
alert(foobar);


By the looks of $m+x I'm guessing that you're trying to create a variable dynamically such as $m0 to $m9 based on iterating from 0 - 10. You can't do that in Javascript as far as I'm aware it will give you an error. I suggest instead of creating a dynamic variable sort of thing why not fill the values inside an array based on the indexes of x.

Here's something:

var $m = [];
for(x=0; x<10; x++)
{
    // some of your codes here ... 

    // make $m[x] an array
    if (typeof $m[x] == "undefined")
        $m[x] = [];

    // some of your codes here...

    for (var i = 1; i < 10; i++)
    {
        // of course you need to change this to what you need to push
        $m[x].push(i);
    }

}

console.log($m[0]); // [1, 2, 3, 4, 5, 6, 7, 8, 9]

So basically $m will be an array with arrays. I don't know if my guess is right but I hope it gives an idea.

0

上一篇:

下一篇:

精彩评论

暂无评论...
验证码 换一张
取 消

最新问答

问答排行榜