Yii creates variables in the view (protecting PHP code), and calls the code instance of the previously created variable in the js file.

First go to the code:

This is the viewsite/reg.php

    $cs = Yii::app()->getClientScript();
    $cs->registerScriptFile('/js/verify-code.js',CClientScript::POS_END);

This is the layout/main.php

$commonValue = json_encode([
            'SmsVerifycodeUrl' => Yii::app()->createAbsoluteUrl('site/SendSmsCode'),
            'WaitSecond' => WapMember::DEFAULT_INTERVAL,
    ]);
Yii::app()->clientScript->registerScript("var commonValue = $commonValue",CClientScript::POS_END);

This is the verify-code.js file

var initSecond = (typeof CommonValue.WaitSecond) == "undefined" ? 180 : CommonValue.WaitSecond,
    waitSecond =initSecond,
    SmsVerifyCode = function(btn, form) { this.getBtn = btn; this.form = form;},
       SCF;

This is the error reported by the chrom browser
verify-code.js:1 Uncaught ReferenceError: CommonValue is not defined

Reply content:

Finally found:
It turned out to be writing

Yii::app()->clientScript->registerScript("var commonValue = $commonValue",CClientScript::POS_END);

is missing a parameter. The result is like this:

Yii::app()->clientScript->registerScript('commonValue',"var commonValue = $commonValue",CClientScript::POS_END);

CommonValue's POS_END is simply adjusted to POS_HEAD.

Or make sure $commonValue is placed before render('reg.php') in main.php. The two registerScripts are in order

ps: Can

verify-code.js return functions or objects instead of referencing global variables in this file?
I have maintained such code before, it is disgusting

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