Summary of debugging methods for blank pages in Vue under ie10-JS Tutorial-php.cn

Summary of debugging methods for blank pages in Vue under ie10

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Release： 2018-06-01 11:50:30

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This time I will bring you a summary of the debugging method of Vue's blank page under ie10. What are the precautions for debugging Vue's blank page under ie10? The following is a practical case, let's take a look.

Found the problem

A Vue I wrote a few days ago is blank under IE, and f12 displays

script1003: expected :. So there is this article...

Solution process

Baidu and Google said that the last item of json is redundant Commas, such as

{
 a: 5,
 b: 4, // 最后一项不能有逗号
}

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are not displayed when searching and correcting all js files, but the situation remains the same. . .

I have no choice but to show my invincible and wise debugging skills: Remove the full text

Comments, and then uncomment line by line, and finally locate the bug location: A plug-in for customizing the right-click menu (v- contextmenu) has a problem. . .

Continuing with the previous smart debugging techniques, I finally discovered several bugs. . .

Under this plug-in, the last item of all

objects has a comma, which makes it incompatible under IE

{
 a: 5,
 b: 4, // 这个逗号要删除
}

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// ie下不支持这种语法
export default {
 bind() {}
}
// 必须在外面定义 function bind() {} 然后
export default {
 bind: bind
}
// 特别告诫，下面这种语法在ie中也是不支持的
export default {
 bind
}

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The most important thing is that this plug-in is in a very hidden place There are two lines of code

if(condition) {
 someArray.push({ a, b })
} else {
 anotherArray.push({ a, b })
}

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The syntax {a, b} is not supported by IE and must be changed to {a: a, b: b}

A whole morning is wasted like this Okay, do you think I want to spray this plug-in? I want to say, whoever uses ie is a dog

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