I told myself that I do not like javascript, actually it is just a joke, you never know when there is a requirement to use it.
Honestly, Javascript is very powerful. Now, I learn JS not for further deeping, but for slightly using its async-functionality in AJAX.

load JS in html

<script src="js/jquery.js"></script>

it’s alright to put it in any position for my level of JS. Actually I hear about the position and sequence of loading JS will have some influence on rendering performance and some logic.

Navigating through HTML is a tough work, but a JS library called jQuery could achieve this without too much burden.

var rows = $("tr", "#bodystart");
//Matching tag by id:bodystart first, then filter all <tr> tag inside this context
for (var i = 0; i < rows.length; i++)
{
    //matching a input tag with specified attribute. Using single row as context.
    if (!$("input[type='checkbox']", rows[i])[0].checked)
        continue;
    console.log("R");
}

The context means searching action will happen only in given scope, which shrink our filter base and easier for targeting a specified tag.

Well I do not want to further into this, Javascript code is bullshit. It just makes JS developer feel like achieving great compare with C/C++/Java developer whose work are not directly revealed.
But actually it’s not that much, please be modest JS developers.
I’d rather pay more attention on C, Java.



Published

25 February 2014

Category

development

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