eclipse去除jquery的小红叉

eclipse上的jquery总有一个小红叉：

找到工程下的.project文件，用文本编辑器打开修改内容下，红色字是注掉的：

<?xml version="1.0" encoding="UTF-8"?>

<projectDescription>

<name>Spider</name>

<comment></comment>

<projects>

</projects>

<buildSpec>

<!-- <buildCommand>

<name>org.eclipse.wst.jsdt.core.javascriptValidator</name>

<arguments>

</arguments>

</buildCommand> -->

<buildCommand>

<name>org.eclipse.jdt.core.javabuilder</name>

<arguments>

</arguments>

</buildCommand>

<buildCommand>

<name>org.eclipse.wst.common.project.facet.core.builder</name>

<arguments>

</arguments>

</buildCommand>

<buildCommand>

<name>org.eclipse.wst.validation.validationbuilder</name>

<arguments>

</arguments>

</buildCommand>

</buildSpec>

<natures>

<nature>org.eclipse.jem.workbench.JavaEMFNature</nature>

<nature>org.eclipse.wst.common.modulecore.ModuleCoreNature</nature>

<nature>org.eclipse.wst.common.project.facet.core.nature</nature>

<nature>org.eclipse.jdt.core.javanature</nature>

<!-- <nature>org.eclipse.wst.jsdt.core.jsNature</nature> -->

</natures>

</projectDescription>